Slow Release of Organoboronic Acids in Cross-Coupling Reactions
申请人:Burke Martin D.
公开号:US20100121062A1
公开(公告)日:2010-05-13
A method of performing a chemical reaction includes reacting a compound selected from the group consisting of an organohalide and an organo-pseudohalide, and a protected organoboronic acid represented by formula (I) in a reaction mixture:
R
1
—B-T (I);
where R
1
represents an organic group, T represents a conformationally rigid protecting group, and B represents boron having sp
3
hybridization. When unprotected, the corresponding organoboronic acid is unstable by the boronic acid neat stability test. The reaction mixture further includes a base having a pK
B
of at least 1 and a palladium catalyst. The method further includes forming a cross-coupled product in the reaction mixture.