Facile C–S Bond Cleavage of Aryl Sulfoxides Promoted by Brønsted Acid
作者:Nuno Maulide、Bogdan R. Brutiu、Immo Klose
DOI:10.1055/s-0040-1707109
日期:——
A method for the Bronsted acid promoted desulfination of aryl sulfoxides is presented. In the presence of a thiol, electron-rich sulfoxides undergo C–S bond cleavage to give the corresponding protodesulfinated arenes and disulfides.
Synthesis of 2,3-disubstituted thiophens via metalated acetylenes and allenes
作者:R.L.P. De Jong、L. Brandsma
DOI:10.1016/s0022-328x(00)87040-0
日期:1982.11
2,3-Disubstituted thiophen derivatives have been obtained in reasonable yields by treating 2-alkyne- and allene derivatives with butyllithium and potassium t-butoxide in tetrahydrofuran, adding carbon disulfide to the organometallic intermediate and then successively adding t-butyl alcohol, hexamethyl-phosphoric triamide and methyl iodide.
DE, JONG, R. L. P.;BRANDSMA, L., J. ORGANOMETAL. CHEM., 1982, 238, N 3, C17-C20
作者:DE, JONG, R. L. P.、BRANDSMA, L.
DOI:——
日期:——
US4738959A
申请人:——
公开号:US4738959A
公开(公告)日:1988-04-19
Antibacterial penem derivatives
申请人:Hoechst UK Limited
公开号:US04738959A1
公开(公告)日:1988-04-19
The present invention relates to certain penem derivatives of the general formula I ##STR1## in which R represents a hydrogen atom or a carboxyl esterifying group, R.sup.1 represents certain unsubstituted and substituted aromatic and heterocyclic groups, and R.sup.2 represents a hydrogen atom, an unsubstituted or substituted alkyl or aryl group. The compound of formula I and salts thereof may be used in the treatment of bacterial infections in man and other animals.