Alkene formation through condensation of phenylmethanesulphonyl fluoride with carbonyl compounds
作者:Shinzo Kagabu、Kenji Hara、Junko Takahashi
DOI:10.1039/c39910000408
日期:——
Arylmethanesulphonyl fluorides condense with aromatic, aliphatic and conjugated aldehydes and ketones in the presence of potassium carbonate and a crown ether to give aryl-substituted alkenes in satisfactory to modest yields.
Selective Fluorosulfonylation of Thianthrenium Salts Enabled by Electrochemistry
作者:Xianqiang Kong、Yiyi Chen、Qianwen Liu、WenJie Wang、Shuangquan Zhang、Qian Zhang、Xiaohui Chen、Yuan-Qing Xu、Zhong-Yan Cao
DOI:10.1021/acs.orglett.2c03956
日期:2023.2.3
A practical electrochemically driven method for fluorosulfonylation of both aryl and alkyl thianthrenium salts has been disclosed. The strategy does not need external redox reagents or metal catalysts. In combination with C–Hthianthrenation of aromatics, this method provides a new tool for the site-selective fluorosulfonylation of drugs.
Process for the preparation of 3-phenyl-2-propenones
申请人:NIHON BAYER AGROCHEM K.K.
公开号:EP0534249A2
公开(公告)日:1993-03-31
A novel process for the preparation of 3-phenyl-2-propenones of the formula
in which
R, Z and mhave the meanings given in the specification,
which process comprises reacting phenylmethanesulphonyl fluorides of the formula
in which
Z and mhave the meanings given in the specification,
with ketones of the formula
in which
A and Rhave the meanings given in the specification,
in the presence of a phase transfer catalyst and in the presence of acid binders and inert solvents.
一种制备式 3-苯基-2-丙烯酮的新工艺
其中
R、Z 和 m 的含义见说明书、
该工艺包括使式如下的苯基甲磺酰氟反应
其中
Z和m的含义见说明书、
与式中的酮反应
其中
A 和 Rh 的含义见说明书、
在有相转移催化剂、酸性粘合剂和惰性溶剂存在的情况下。
Kagabu, S.; Shimizu, C.; Takahashi, J., Bulletin de la Societe Chimique de France, 1992, # 5, p. 435 - 439
作者:Kagabu, S.、Shimizu, C.、Takahashi, J.、Hara, K.、Koketsu, M.、Ishida, M.
DOI:——
日期:——
A measure of charge transfer (ϱ) versus a measure of bond tightness (ϱij) in the transition state.