A report on the “new frontiers in group 13 chemistry” symposium from the 88th Canadian Society for Chemistry Conference and Exhibition

The 88th Canadian Society for Chemistry Conference and Exhibition was held in Saskatoon, Saskatchewan, during the period of May 28–June 1, 2005. More than 250 chemists from various academic institutes and industries enjoyed five plenary lectures, thirteen oral presentations and a plethora of poster presentations. © 2007 Wiley Periodicals, Inc. Heteroatom Chem 18:323–332, 2007; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20287     

Report on the 28th symposium on heteroatom chemistry of the chemical society of Japan

The 28th domestic Symposium on Heteroatom Chemistry of the Chemical Society of Japan was held at Saitama Culture Center in Saitama during the period of December 12–14, and about 250 chemists from various academic institutes and industries took part in the symposium. There were four plenary lectures, 44 oral presentations, and 52 poster presentations. The present article describes abstracts of the plenary lectures and graphical abstracts of oral presentations. Titles of poster presentations are also given. © 2003 Wiley Periodicals, Inc. Heteroatom Chem 14:1–12, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.10073     

A report on the 29th symposium on heteroatom chemistry of the chemical society of Japan

The 29th domestic Chemical Society of Japan Symposium on Heteroatom Chemistry was held in Hiroshima during the period of December 12–14, 2002, under the management of Tetsuo Otsubo of Hiroshima University. About 250 chemists from various academic institutes and industries enjoyed four plenary lectures, 44 oral presentations, and 53 poster presentations. © 2003 Wiley Periodicals, Inc. Heteroatom Chem 14:387–398, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.10186     

A Report on the 30th Symposium on Heteroatom Chemistry of the Chemical Society of Japan

The 30th domestic Chemical Society of Japan Symposium on Heteroatom Chemistry was held at Kuroda Auditorium of Toyama University during the period of December 11–13, 2003, under the management of Prof. Toshiaki Yoshimura and Dr. Takayoshi Fujii. More than 250 chemists from various academic institutes and industries enjoyed 4 plenary lectures, 48 oral presentations, and 62 poster presentations. © 2004 Wiley Periodicals, Inc. Heteroatom Chem 15:347–361, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20020     

Synthesis of substituted benzoindolinothiazepines using 5‐ and 6‐nitroindolines

Here is proposed a method of synthesis of benzoindolothiazepine compounds using Friedel‐ Crafts reactions conditions from indolines. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:39–43, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20063     

Interaction of 1,2‐alkadienephosphonic dialkyl esters with sulfenyl‐ and selenenylbromides

The reactivity of dialkyl esters of 1, 2‐alkadienephosphonic acids toward sulfenyl‐ and selenenyl‐bromides has been investigated. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:156–222, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20083     

Direct heterocyclization of benzocrown ethers

The synthesis of novel 3,3‐dialkyl‐3,4‐dihydroisoquinoline derivatives via direct heterocyclization of benzocrown ethers is described. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:192–195, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20092     

Reactivity of terminal transition metal borylene complexes

The chemistry of terminal transition metal borylene complexes is reviewed, with particular attention to recent developments concerning the reactivity of these species. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:566–571, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20143     

The povarov reaction of cyclopentadiene with imines from methyl 12‐amino‐dehydroabietate

The aza‐Diels‐Alder cycloaddition reaction of cyclopentadiene with benzylideneanilines from methyl 12‐amino‐dehydroabietate is described via the Povarov reaction. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:605–612, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20159     

A facile synthesis of dihydrobenzofuranols by photocyclization of (2‐alkoxy‐5‐methyl‐phenyl)(aryl) methanone and ethyl 2‐aroyl‐4‐methylphenyloxyacetates

Irradiation of 2‐alkoxy substituted benzophenones 2a–f and ethyl 2‐aroyl‐4‐methylphenyloxyacetates 2g–i in benzene and in acetonitrile underwent photocyclization to substituted dihydrobenzofuranols 3a–i with 3a–c in very less yield being racemate and 3d–i in good yield being mixture of cis‐trans isomers showing high stereoselectivity in benzene and decreased stereoselectivity in acetonitrile. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:212–217, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20111     

Synthesis of 3-aryl(hetaryl)-1,2,3-diazaphospholines

A reaction of cyclohexanone phenylhydrazone with (het)aryldihalogenophosphines has been studied. As shown, cyclohexanone phenylhydrazone reacts with phenyldibromophosphine and 5-methyl-2-furyldibromophosphine to provide the corresponding 1,2,3-diazaphospholines in high yields. The diazaphospholines thus obtained have been derivatized. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:81–83, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20074     

A convenient and applicable route to synthesize 2‐(1‐alkynyl)phenylphosphonates

A convenient and applicable route has been developed to synthesize various 2‐(1‐alkynyl)‐ phenylphosphonates starting from easily available phenols via palladium‐catalyzed alkynyl‐dehydroxylation of 2‐hydroxylphenylphosphonates. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:529–534, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20156     

A facile stereoselective synthesis of (E)‐1,2‐disubstituted vinylic selenides via hydromagnesiation of alkylarylacetylenes

Hydromagnesiation of alkylarylacetylenes 1 in diethyl ether gave (E)‐α‐arylvinyl Grignard reagents 2 , which reacted with arylselenenyl bromides 3 in THF to afford stereoselectively (E)‐1,2‐disubstituted vinylic selenides 4 in good yields. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:65–68, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20066     

Mildly and highly selective reductive deoxygenation of para‐di‐ and monoalkylaminophenyl ketones by borane

Para‐di‐ and monoalkylaminophenyl ketones were reduced selectively to para‐alkyl N,N‐di‐ and N‐monoalkylanilines in good to excellent yields by borane under mild, convenient, and neutral conditions. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:2–5, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20062     

Synthesis of 3‐substituted 2‐trifluoro(trichloro)methyl‐2H‐chromenes by reaction of salicylaldehydes with activated trihalomethyl alkenes

The reaction of activated trihalome‐ thylsubstituted alkenes with salicylaldehydes in the presence of triethylamine gives 3‐substituted 2‐trifluo‐ romethylchroman‐4‐ols and 2‐trifluoro(trichloro)methyl‐2H‐chromenes in high yields. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:492–496, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20146     

Synthesis of 2‐phosphinoxidomethyl‐ and 2‐phosphonomethyl glutaric acid derivatives

Michael addition of the corresponding anions derived from diphenylphosphine oxide, dialkylphosphites, and a cyclic phosphite to α‐methylene‐glutaric esters ( 1 ) afforded the title compounds ( 2–6 ). Double debenzylation of 2‐phosphono glutaric esters 4b and 5a by catalytic hydrogenation under the appropriate conditions gave the correspon‐ ding diacides 8 and 9 , respectively. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:562–565, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20142     

Microwave‐assisted from synthesis of 2‐arylamino‐2‐imidazolines on a solid support

An efficient synthesis of 2‐arylamino‐2‐imidazolines from dimethyl N‐aryldithioimidocarbonates and ethylenediamine on solid support under microwave irradiation has been developed. The reaction time has been reduced from hours to minutes with improved yields as compared to conventional heating. Their piperidin‐4‐ylmethyl and morpholin‐4‐ylmethyl derivatives were synthesized by treatment with formaldehyde and piperidine or morpholine. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:142–222, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20081     

Sulfur‐containing derivatives of 1,4‐naphthoquinone,part 1: Disulfide synthesis

Disulfides of 1,4‐naphthoquinone were synthesized, and different methods of their synthesis were investigated. High yields and purity of disulfides were obtained from the oxidation of thiol derivatives. The latter were prepared in high yields and purity from isothiuronic salts. The obtained disulfides are syntho‐ nes for compounds with a wide spectrum of biological activity. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:205–211, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20112     

The first synthesis of optically active 1‐substituted taurines

Optically active 1‐substituted taurines, a type of important sulfur analogues of naturally occurring amino acids, and their N‐benzyloxycarbonyl‐protected derivatives were synthesized from the corresponding optically active β‐amino secondary alcohols in three steps via N‐protection with benzyl chloroformate, substitution with thiolacetic acid under Mitsunobu conditions, and oxidation with performic acid. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:466–471, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20133     

One‐pot three components synthesis of alkyl indeno [1,2‐b]‐quinoxalin‐11‐ylideneacetates in water and under solvent‐free conditions

We introduced a very simple, one‐pot three component procedure for preparation of alkyl indeno[1,2‐b]quinoxalin‐11‐ylideneacetates 4 from reaction of ninhydrin 1 , phenylenediamines 2 , (alkoxycarbonylmethyl)triphenylphosphonium bromides 3 , and sodium acetate in water and under solvent‐free conditions. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:549–552, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20136