Chiral porphyrins, chiral metalloporphyrins, and methods for synthesis of the same
申请人:Zhang Peter X.
公开号:US20050124596A1
公开(公告)日:2005-06-09
Novel methods of synthesizing heteroatom-containing chiral porphyrins and chiral metalloporphyrins and the novel chiral porphyrins and chiral metalloporphyrins themselves are disclosed. Metal complexes of the chiral porphyrins are prepared in high yields and shown to be active catalysts for highly enantioselective and diastereoselective cyclopropanation, aziridination, and epoxidation of alkenes under a practical one-pot protocol.
METHOD FOR PREPARATION OF 6-[3(1-ADAMANTYL) -4-METHOXYPHENYL]-2-NAPHTOIC ACID
申请人:Kalvinsh Ivars
公开号:US20100076219A1
公开(公告)日:2010-03-25
A method for preparation of 6-[3-(1-adamantyl)-4-methoxyphenyl]-2-naphthoic acid is disclosed based on “one pot” synthesis approach including a direct synthesis of boronic acid derivative from 2-(1-adamantyl)-4-bromoanisole and cycloboranes with a subsequent Suzuki-Miyaura coupling with 6-halonaphthenoates and basic hydrolysis of the reaction product in ethylene glycol or 1,2-propanediol.
PROCESS FOR PREPARATION OF 6-[3-(1-ADMANTYL)-4-METHOXYPHENYL]-2-NAPHTOIC ACID.
申请人:Kalvinsh Ivars
公开号:US20100160677A1
公开(公告)日:2010-06-24
A process for preparation of 6-[3-(1-adamantyl)-4-methoxyphenyl]-2-naphthoic acid from 2-(1-adamantyl)-4-bromanisolee is disclosed, based on transformation of 2-(1-adamantyl)-4-bromanisole into a Grignard's reagent by using metallic magnesium, anhydrous lithium chloride and dibromoethane followed by transmetallation with borates to 3-(adamantyl)-4-methoxyphenylboronic acid, which is converted into 6-[3-(1-adamantyl)-4-methoxyphenyl]-2-naphthoic acid esters by Suzuki-Miyaura cross-coupling reaction with alkyl-6-halonaftoates catalyzed by Pd [0] or Pd/phosphine ligands and followed by basic hydrolysis in ethylene glycol or 1,2-propanediol of ester thus obtained into 6-[3-(1-adamantyl)-4-methoxyphenyl]-2-naphthoic acid.
An Improved Synthesis of Functionalized Biphenyl-Based Phosphine Ligands
作者:Hiroshi Tomori、Joseph M. Fox、Stephen L. Buchwald
DOI:10.1021/jo000691h
日期:2000.8.1
Functionalized dicyclohexyl- and di-tert-butylphosphinobiphenyl ligands are prepared by the reaction of arylmagnesium halides with benzyne, followed by the addition of a chlorodialkylphosphine. This one-pot procedure is considerably less expensive and time-consuming than the method used previously to prepare such ligands. The cost of introducing the dicyclohexylphosphine group can be decreased by preparing
Heteroatom-substituted porphyrins and methods for synthesis of same
申请人:University of Tennessee Research Corporation
公开号:US20030236400A1
公开(公告)日:2003-12-25
Novel methods of synthesizing heteroatom-containing porphyrins and metalloporphyrins are disclosed. Novel heteroatom-containing porphyrin and metalloporphyrin compounds are also disclosed. The new methods advantageously utilize metal-catalyzed cross-coupling and amination reactions to produce porphyrin compounds useful in a variety of practical applications.