The process according to the invention relates to the preparation of 2-chloromethyl-thiophene of the formula (I). During this process thiophene is chloromethylated in the presence of one or more compounds containing keto group and optionally it is transformed into the compound of the formula (II). Compounds of formula (I) and (II) are intermediates of several pharmaceutically active ingredients.
本发明的工艺涉及式(I)2-氯甲基噻吩的制备。在此过程中,噻吩在一种或多种含有酮基的化合物的存在下被氯甲基化,并有选择地转化为式(II)化合物。式 (I) 和 (II) 化合物是多种药物活性成分的中间体。
CHLOROMETHYLATION OF THIOPHENE
申请人:SANOFI-SYNTHELABO
公开号:EP1392672A1
公开(公告)日:2004-03-03
US7462725B2
申请人:——
公开号:US7462725B2
公开(公告)日:2008-12-09
[EN] CHLOROMETHYLATION OF THIOPHENE<br/>[FR] CHLOROMETHYLATION DU THIOPHENE
申请人:SANOFI SYNTHELABO
公开号:WO2002094806A1
公开(公告)日:2002-11-28
The process according to the invention relates to the preparation of 2-chloromethyl-thiophene of the formula (I). During this process thiophene is chloromethylated in the presence of one or more compounds containing keto group and optionally it is transforme d into the compound of the formula (II). Compounds of formula (I) and (II) are intermediates of several pharmaceutically active ingredients.
Chemoselective Homologation–Deoxygenation Strategy Enabling the Direct Conversion of Carbonyls into (<i>n+1</i>)-Halomethyl-Alkanes
作者:Margherita Miele、Andrea Citarella、Thierry Langer、Ernst Urban、Martin Zehl、Wolfgang Holzer、Laura Ielo、Vittorio Pace
DOI:10.1021/acs.orglett.0c02831
日期:2020.10.2
The sequential installation of a carbenoid and a hydride into a carbonyl, furnishing halomethyl alkyl derivatives, is reported. Despite the employment of carbenoids as nucleophiles in reactions with carbon-centered electrophiles, sp3-type alkyl halides remain elusive materials for selective one-carbon homologations. Our tactic levers on using carbonyls as starting materials and enables uniformly high