Fluoroaliphatic esters of fluorosulfonic acid. 6. Interaction of fluorine-containing α,β-bis-fluorosulfatocarbonyl compounds with nucleophilic reagents

Fluorine-containing ,-fluorosulfatocarbonyl compounds interact with halides of alkali metals with the formation of -halogeno--dicarbonyl derivatives.A. N. Nesmeyanov Institute of Heteroorganic Compounds, Russian Academy of Sciences, 177813 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 3, pp. 715–719, March, 1992.     

Keyword Index Vol. 6, 1995

Ｋｅｙｗｏｒｄ　Ｉｎｄｅｘ　Ｖｏｌ．６，１９９５ＡＭＩＣＯｍｅｔｈｏｄ（７９７）ＭＰ（８０１）Ａｈｉｎｌｔｌｏｃａｌｃｕｌａｔｉｏｎ（４１１）（４９１）ＡｈＩｎｌｔｌｏｓｔｕｄｙ（９６１）Ａｂｓｏｌｕｔｅｃｏｎｆｉｇｕｒａｔｉｏｎ（７５９）Ａｃｅｔａ...     

Author Index Vol. 6, 1995

Ａｕｔｈｏｒ　Ｉｎｄｅｘ　Ｖｏｌ．６，１９９５ＡｂｌｌｚＺ．（３９５）ＡｎＬ．Ｄ．（３４５）（４４７）ＡｏｋｉＪ．（３９５）ＢａｂａＫ．（３８５）ＢａｌＤ．Ｌ．（１９３）ＢａｌＦ．Ｌ．（２０１）ＢａｌＪ．（９０３）ＢａｔＪ．Ｆ．（８２３）ＢａｌＴ．（...     

Acta Polymerica Sinica,2000,No.6

Abstracts No.6,December,2000 RADIATION PREPARATION OF KAPPA-CARRAGEENAN/PVP BLEND HYDROGEL Mao-lin Zhai and Hong-fei Ha Department of Technical Physics,Peking University,Beijing 100871 Fumto Yoshii and Keizo Makuuchi Takasaki Radiation Chemistry Research Establishment,JAERI A series of hydrogels in the form of rods were prepared from Kappa-carrageenan(KC)，N-vinyl pyrrolidone(N-VP)and polyethylene glycol dimethacrylate(14G)by gamma radiation with 60Co γ source at room temperature.The properties of the     

Chinese Journal of Polymer Science Volume 24, No. 1-6, 2006 CONTENTS

In州emory of Professor Dr.Xin一de Feng PaPers Strueture〔volution of Polymer Chains for Necking Formation in High·SPeed Fiber SPinning Process Hong Zheng，Wei丫u，Hong一binZ卜ang and〔hi·xing Zhou Rate of Intra一Moleeu!ar Contact Formation in Short Two一Dimensional ComPaet Polymers Chains』in Chon.Lin·xi Zhang andA一gen Xia l3 SynthesiS of Novel ThioPhenedimethylene Bridged Homobinue!ear Metalloeenes and Their Catalytie ProPerties for Ethylene Polymerization Xi一}ie Li…     

Synthesis of 6, 9, 11-Trihydroxy-6a, 12a-dehydrorotenoid

6, 9, 11-Trihydroxy-6a, 12a-dehydrorotenoid 1 (coccineone B) was synthesized from 2-hydroxybenzaldehyde 2 and phloroglucinol.     

Photocrosslinking of Silicones. Part XV. Cationic Photocrosslinking of α, ω, 4-Terminated Disiloxanes

Abstract

The photoinduced cationic crosslinking of α, ω-terminated disiloxanes (epoxy, vinyl ether, propenyl ether) has been investigated by means of Real-Time IR spectroscopy. A lipophilic iodonium salt and three lipophilic sulfonium salts were used as photoinitiator. The crosslinking rate is influenced by the type of α, ω-terminated disiloxane used and differed by a factor of more than 100 from the aliphatic epoxy to the vinyl ether derivatives. Moreover, the sulfonium salts were found to have a lower initiation efficiency than the lipophilic iodonium salt in the various systems studied. These results are in good agreement with the quantum yield of proton formation in a hexamethyldisiloxane/dimethoxyethane mixture. The final degree of conversion is larger with the ene derivatives than with the epoxy derivatives. The application of a kinetic method allows us to estimate the rate constant of the termination step (k_t and for the propenyl derivative the rate constant of the propagation step kp. The termination step can be described by means of a first order reaction. k_t was found to depend on the light intensity and the type of initiators used, whereas k_p is independent of the initiator used.     

Author Index Vol. 25 No. 1-6, 2007

AUthor Index甘。!.25目0.卜‘.2007 Li，Hua Li，Ji Li，J ian一ling Li，Ji一Peng Li，Kai一un Li，Meng一yan Li，Shi一ben Li，Shi一yun Li，Shu一ning Li，51一dong Li，X iao一yu Li，Yan一guo Li，Yue一sheng Li，Ting Liang，Dong Liang，51 Ling，Fang Liu，Bin Liu，Jing Liu，Jing一yu Liu，Lan Liu，Qun一feng Liu，Zong一tang L6tzseh，D. Lu，Man一geng Lu，Yl Luo，Hong一xin Luo，Jing Luo，Yuan一fang Luo，Zheng一hong Lv，Rui 331 181 3 11 227 651 331 525 1 87 555 635 2 17 325 325 207 59…     

Chinese Journal of Polymer Science Volume 17, No. 1～6, 1999 C0NTENTS

尺eVIeWSSynthesis of the Catalysts by the Funetionalization of Siliea and Its APPlieationsY自suhiko KurusuKineties of Vinyl Chloride(Co)Polymerization at High ConversionZu一ren Pan,Zhi一xuew亡ng and Zhi一ming HuangControlled Synthesis of AmPhiPhilie Block Polymers Having Glueose Residues and TheirStrueture FormationTakeaki Miyamoto,Masahiko Minoda and YOshinobu Tsujii卜l卜13卜21内persEffeet of AdsorPtion on the Viseosity of Dilute Polymer SolutionRong一shi Cheng,Yu一fang S…     

Synthesis of 6-chloronicotinates of steroidal 3β,5α,6β-triols and 3β,5-dihydroxy-6-ketones

New esters of 3β,5α,6β-trihydroxysteroids and 3β,5-dihydroxy-6-ketosteroids containing 6-chloropyridine groups characteristic of the alkaloid epibatidine were synthesized by acylation with 6-chloronicotinoylchloride. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 175-179, March-April, 2009.     

Structure-Activity Relationship of Insecticidal Steroids. III. Δ4,7-6-Ketosteroids

The toxicity of steroids 1-11 for colorado beetle (Leptinotarsa decemlineata Say.) larvae was studied by contact-intestinal treatment. Active insect-growth regulators were found among the studied compounds.     

Structure-Activity Relationship of Insecticidal Steroids. V. 3β-Benzoyloxystigmastan-6-ones

The toxicity of steroid benzoates 4-10 for Colorado beetle (Leptinotarsa decemlineata Say.) larvae was studied by a contact-intestinal method. The most active growth and development regulator for this insect is 3-benzoyloxy-5-hydroxy-⁷-6-ketosteroid 9a.     

Acetals of lactams and acid amides. 73. Synthesis and some properties of derivatives of 6-nitro-γ-carboline

We have developed two synthesis routes for 4-amino derivatives of 6-nitro--carbolines: 1) consecutive conversion of 1,2-dimethyl-3-formyl-5-nitroindole to the 3-cyano derivative, condensation of the latter with DMF diethyl acetal, and cyclization of the enamine formed in this case with ammonia and benzylamine; 2) N-oxidation of 9-substituted 6-nitro--carbolines, transformation of N-oxides to the corresponding -carbolin-4-ones, from which the target compounds are obtained through the 4-chloro derivatives.For Communication 72, see [1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 502–505, April, 1992.     

Isomerization of B6, B6 − and B6 + clusters

The interconversions between isomers with the same spin multiplicity of neutral B₆ and charged B₆ ^? and B₆ ⁺ clusters have been investigated at the B3LYP/6-311+G* level of theory, including determination of the minimum energy pathways with transition states connecting the corresponding reactants and products. In dynamic calculations, 26 isomers were optimized, including 11 novel isomers. In order to further refine the energies, single-point B3LYP/6-311+G(3df) calculations were carried out on the corresponding B3LYP/6-311+G* geometries of all isomers of B₆, B₆ ^? and B₆ ⁺ and the corresponding isomerization transition states. The stability of each isomer of B₆ (singlet and triplet states), B₆ ^? (doublet state) and B₆ ⁺ (doublet state) was analyzed from both thermodynamic and dynamic viewpoints.