A Highly Chemoselective and Rapid Chlorination of Benzyl Alcohols under Neutral Conditions
作者:Chunbao Li、Lili Sun、Guisheng Peng、Hongmei Niu、Qiang Wang
DOI:10.1055/s-0028-1083243
日期:2008.12
A rapid and highly selective chlorination method has been developedusing 2,4,6-trichloro-1,3,5-triazine (TCT) catalyzed by dimethylsulfoxide. The reactions take 10 to 40 minutes, and the yields arealmost quantitative. The neutral reaction conditions are compatiblewith substrates bearing acid-labile functional groups. Both competitiveintramolecular and intermolecular reactions for benzyl alcoholsin
Herein we report a new method for the catalytic Appel reaction by P(III)/P(V) redox cycling at very low catalyst loadings of 1–2 mol % using low amounts of hexachloroacetone as the halogen source and phenylsilane as the terminal reductant. Twenty-six alcohols and nine epoxides containing a wide variety of functional groups were converted to the respective chlorides and dichlorides in yields of up to
Levene; Rothen; Kuna, Journal of Biological Chemistry, 1937, vol. 120, p. 789
作者:Levene、Rothen、Kuna
DOI:——
日期:——
INDOLE DERIVATIVES AS 5-ALPHA-REDUCTASE INHIBITOR
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0603278A1
公开(公告)日:1994-06-29
[EN] INDOLE DERIVATIVES AS 5-ALPHA-REDUCTASE INHIBITOR
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:WO1993005019A1
公开(公告)日:1993-03-18
(EN) Indole derivatives of formula (I), or a salt thereof, which are useful as a testosteron 5$g(a)-reductase inhibitor.(FR) L'invention se rapporte à des dérivés d'indole représentés par la formule suivante (I), ou à un sel de ces dérivés, qui sont utiles comme inhibiteur de la testostérone 5$g(a)-réductase.