Patent · US Expired

Process for preparing bisallylboranes and nonaromatic boronic acids

US6855848B2 · kind B2 · utility

39Cited by

3References

3Claims

0Family size

Assignee

Clariant Corporation · DE

Inventors

Stefan Scherer · Büttelborn, DE
Alexei Kalinin · Kingston, CA
Victor Snieckus · Waterloo, CA

Key dates

Filing date	Aug 28, 2003
Grant date	Feb 15, 2005
Priority date	—
Expiry date	Aug 28, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F5/027
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for preparing bisallylboranes of the formula (I) by reacting a diene with sodium borohydride in the presence of an oxidant: in an inert solvent, with the borane generated in situ reacting selectively with the diene to form the bis(allyl)borane of the formula (I) and the substituents R1 to R6 having the following meanings: As oxidant, it is possible to use, for example, alkyl halides or dialkyl sulfates. In a particularly preferred embodiment, the diene used is 2,5-dimethylhexa-2,4-diene (R1, R2, R5, R6=methyl, R3, R4=H).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.