transformed into 8-methoxytetralins through the action of zirconiumtetrachloride. Yields are generally good though turnover is slow. Ultrasonic irradiation, phase transfer catalysts, crown ethers and lithium chloride all accelerate the reaction which proceeds via scission of the C-1 to C-8a bond and cyclisation by intramolecular Friedel-Crafts alkylation.
Photoinduced, Copper-Promoted Regio- and Stereoselective Decarboxylative Alkylation of α,β-Unsaturated Acids with Alkyl Iodides
作者:Chao Wang、Yingjie Lei、Mengzhun Guo、Qinyu Shang、Hong Liu、Zhaoqing Xu、Rui Wang
DOI:10.1021/acs.orglett.7b03289
日期:2017.12.1
The first example of UV light-induced, copper-catalyzed regio- and stereoselective decarboxylative coupling of α,β-unsaturated acids with alkyl iodides was reported. Under standard conditions, the 1°, 2°, and 3° alkyl iodides proceeded smoothly with the E-selective alkenes obtained in uniformly good yields and high stereoselectivities.
The present invention provides a compound represented by the formula (I):
wherein each symbol is as defined in the specification, or a salt thereof. The compound of the present invention has a glucokinase activity, and is useful as a medicament such as an agent for the prophylaxis or treatment of diabetes, obesity and the like, and the like.
Reaction of Alkenes with Hydrogen Peroxide and Sodium Iodide: A Nonenzymatic Biogenic-Like Approach to Iodohydrins
作者:José Barluenga、María Marco-Arias、Francisco González-Bobes、Alfredo Ballesteros、José M. González
DOI:10.1002/chem.200305582
日期:2004.4.2
An efficient protocol to synthesize iodohydrins from alkenes is presented. Reactions were conducted in aqueous media using safe and readily available sodiumiodide (the most abundant form of the element), and a highly convenient oxidant such as hydrogen peroxide. Addition of a protic acid triggers a faster and efficient process, a role formally related to that played by haloperoxidase enzymes in naturally
Substituted-cycloalkyl and oxygenated-cycloalkyl glucokinase activators
申请人:——
公开号:US20030225283A1
公开(公告)日:2003-12-04
2,3-Di-substituted N-heteroaromatic propionamides with said substitution at the 2-position being a substituted phenyl group and at the 3-position being a polar ring, said propionamides being glucokinase activators which increase insulin secretion in the treatment of type II diabetes.