Pyridine Non-Classical Cannabinoid Compounds and Related Methods of Use
申请人:Moore, II Bob M.
公开号:US20090286818A1
公开(公告)日:2009-11-19
wherein R
1
, R
2
, V, W, X, Y and Z can be as defined herein. The compounds can be used in the treatment of disorders mediated by the cannabinoid receptors.
其中R1、R2、V、W、X、Y和Z可以如本文所定义。这些化合物可用于治疗由大麻素受体介导的疾病。
Air- and Light-Stable <i>S</i>-(Difluoromethyl)sulfonium Salts: <i>C</i>-Selective Electrophilic Difluoromethylation of β-Ketoesters and Malonates
作者:Sheng-Le Lu、Xin Li、Wen-Bing Qin、Jian-Jian Liu、Yi-Yong Huang、Henry N. C. Wong、Guo-Kai Liu
DOI:10.1021/acs.orglett.8b03067
日期:2018.11.2
Air- and light-stable electrophilic difluoromethylating reagents, S-(difluoromethyl)-S-phenyl-S-(2,4,6-trialkoxyphenyl) sulfonium salts were successfully developed, and the introduction of intramolecular hydrogen bonds plays a crucial role for the stabilities and reactivities of these reagents. C-selective difluoromethylation of a broad range of β-ketoesters and malonates proceeded smoothly under mild
highly carbon‐selective difluoromethylation of soft carbon nucleophiles including β‐ketoesters, malonates, oxindoles, benzofuranones and ketenesilylacetals with a difluoromethylated sulfonium ylide under mild conditions was described. Mechanistic studies suggest that these difluoromethylating reactions proceed via a difluorocarbene pathway.
Bench‐Stable
<i>S</i>
‐(Monofluoromethyl)sulfonium Salts: Highly Efficient
<i>C</i>
‐ and
<i>O</i>
‐Regioselective Monofluoromethylation of 1,3‐Dicarbonyl Compounds
作者:Wen‐Bing Qin、Jian‐Jian Liu、Zhongyan Huang、Xin Li、Wei Xiong、Jia‐Yi Chen、Guo‐Kai Liu
DOI:10.1002/ejoc.202000998
日期:2020.9.30
Novel bench‐stable S‐(monofluoromethyl)‐S‐phenyl‐S‐(2,4,6‐trialkoxyphenyl)sulfonium salts were readily prepared for C‐ and O‐regioselective monofluoromethylation of 1,3‐dicarbonyl compounds in good to excellent yields under mild reaction conditions.
Method for the production of substituted 2-aryl malonic acid esters
申请人:Maywald Volker
公开号:US20100056820A1
公开(公告)日:2010-03-04
The present invention relates to a process for preparing substituted 2-arylmalonic esters of the general formula I
in which R is C
1
-C
6
-alkyl or C
1
-C
4
-alkoxy-C
1
-C
4
-alkyl; Ar is phenyl or a heteroaromatic 5- or 6-membered ring; where each carbon atom present in the radicals mentioned above optionally carries a substituent R
A
; R
A
is F, Cl, CN, NO
2
, C
1
-C
4
-alkyl, C
1
-C
4
-haloalkyl, C
1
-C
4
-alkoxy, C
1
-C
4
-haloalkoxy, etc., or two adjacent substituents R
A
together with the carbon atoms to which they are attached form a ring; and where a malonic ester is reacted with a base and an aryl bromide in the presence of a copper salt, which comprises employing from 0.1 to 0.65 molar equivalents of the base per molar equivalent of the malonic ester.