A review of: “The Effects of Hostile Environments on Coattings and Plastics,Acs. D. P. Garner and G. A. Stahl (Editors): Symposium Series 229, American Chemical Society,Washington, D.C., 1983, 339 pp., U.S. and Canada $47.95, export $57.95.”

Rh‐catalyzed polymerization of a new N‐propargylamide monomer having a galactose residue was investigated. The polymerization proceeded in a mixed solvent of THF and water to produce the galactose‐carrying poly(N‐propargylamide) consisting of cis‐isomer. The copolymerization of the monomer with the N‐propargylamide having the alkyl chain was also carried out.     

The Chemical Reactions of 11-Hydroxycephalotaxine

1l-HydroxycephalotaxinelisoneofthethreeC,,-oxygenatedalkaloidsisolatedfromthegenusCePhalotaxus.Onlyafewreportsonthechemicaland,biologicalactivityandderivationsoflwerefoundl-3.Someofthechemicalreactionsofll-hydroxy-cephalotaxinel,whichwereencounteredduringthederivationoflandtherelatedcompoundsweredescribedinthispaPeLAcetylationoflwithlessthantwomolarofaceticanhydrideformedtWomonoacetateA,(C,-acetate)andB,(C,,-acetate)infavorofC,,acetylationduetothestericdifference(AandBstridthosecomPOunds…     

67~(th) Meeting of the Israel Chemical Society

Topics: Charge- Transfer Reactions, Nanochemistry and Single Molecules, Stereochemistry andAssymmetric Synthesis, Bioinorganic and Bioorganic Chemistry, Enzymes and Proteins, Quantum Chemistry, Chemistry Education, Thin Films and Supramolecular Chemistry, Colloid Chemistry, Recent Israeli Scientific Contributions, Analytical Chemistry, Industrial Chemistry and more.The conference will take place onJanuary 29-30, 2002At the Renaissance Hotel and Convention Center, Jerusalem, Isra…     

Introduction to the Chinese Society of Chemical Science and Technology in the UK(CSCST-UK)and Chinese Section of Society of Chemical Industry(SCI-CS)

ＴｈｅＣｈｉｎｅｓｅＳｏｃｉｅｔｙｏｆＣｈｅｍｉｃａｌＳｃｉｅｎｃｅａｎｄＴｅｃｈｎｏｌｏｇｙｉｎｔｈｅＵＫ(ＣＳＣＳＴ ＵＫ)ｉｓｐｒｏｆｅｓｓｉｏｎａｌｏｒｇａｎｉｚａ ｔｉｏｎｏｒｇａｎｉｚｅｄｂｙＣｈｉｎｅｓｅＳｃｈｏｌａｒｓｃｕｒｒｅｎｔｌｙｗｏｒｋｉｎｇｉｎｔｈｅＵＫ .ＩｔｗａｓｅｓｔａｂｌｉｓｈｅｄｉｎＡｐｒｉｌ 1994ｉｎＬｏｎｄｏｎｗｉｔｈｔｈｅｈｅｌｐｏｆｔｈｅＥｄｕｃａｔｉｏｎＳｅｃｔｉｏｎｏｆＣｈｉｎｅｓｅＥｍｂａｓｓｙｉｎｔｈｅＵＫａｆｔｅｒｔｈｅｉｎｉｔｉａｔｉｏｎｆｒｏｍ…     

The Study of Alcoholysis of 1,2-Thiazetidine-l,l-dioxide with Quantum Chemical Method

The alcoholysis mechanism of 1,2-thiazetidine-1,1-dioxide with methanol, in which the relatively stable product is sulfonate ester, has been investigated by quantum chemical method. Our calculations indicate the reaction for alcoholysis of 1,2-thiazetidine-1,1-dioxide proceeds via two possible mechanisms: concerted and stepwise. In the stepwise mechanism, two possible reaction pathways can be followed while only one possible reaction pathway can be followed in the concerted mechanism.     

Chemical Constituents from Bletilla ochracea Schltr.

To study the chemical constituents in Bletilla ochracea Schltr.,repeated column chromatographies and preparative TLC were used for the isolation of compounds,and spectroscopic techniques(NMR,IR,UV and MS)were used for their structural identification.Seven compounds,2,7-bis(allyloxy)-5-methoxy-3-methyl-9,10-dihydrophenanthrene(1),gastrodin(2),gastrodigenin(3),β-sitosterol(4),stigmasterol(5),4-hydroxybenzaldehyde(6),and daucosterol(7)were obtained from the roots of B.ochracea Schltr.Compound 1 is structurally illustrated as a novel compound,and the others are isolated from the title plant for the first time.     

The Division of Analytical Chemistry of The Federation of European Chemical Societies

ＦＥＣＳ ,ｔｈｅＦｅｄｅｒａｔｉｏｎｏｆＥｕｒｏｐｅａｎＣｈｅｍｉｃａｌＳｏｃｉ ｅｔｉｅｓ,ｃｏｍｐｒｉｓｅｓａｎｕｍｂｅｒｏｆＤｉｖｉｓｉｏｎｓａｎｄＷｏｒｋｉｎｇＰａｒ ｔｉｅｓｓｐｅｃｉａｌｉｚｉｎｇｉｎｃｅｒｔａｉｎｆｉｅｌｄｓｓｕｃｈａｓＦｏｏｄＣｈｅｍ ｉｓｔｒｙ ,ＥｌｅｃｔｒｏｃｈｅｍｉｓｔｒｙｏｒＣｈｅｍｉｃａｌＥｄｕｃａｔｉｏｎ .ＡｍｏｎｇｔｈｅｍｔｈｅＤｉｖｉｓｉｏｎｏｆＡｎａｌｙｔｉｃａｌＣｈｅｍｉｓｔｒｙ ,ＤＡＣ ,ｉｓｏｎｅｏｆｔｈｅｌａｒｇｅｓｔｗｉｔｈｒｅｓｐｅｃｔｔｏ…