New organoboron reagents for the preparation unsubstituted propa

Details New organoboron reagents for the preparation unsubstituted propa New organoboron reagents for the preparation unsubstituted propa

1991-06-20

1992-05-05

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 502

Patent

active

051109662

ABSTRACT:
The novel organoboron reagent of the present invention is useful in the preparation of unsubstituted propargylic alcohols. This compound reacts with aldehydes and ketones cleanly to afford propargylic alcohols in excellent yields. Unsubstituted propargylic alcohols are important synthetic intermediates in the synthesis of a number of natural products. In addition, the novel organoboron reagent of the present invention also demonstrates diastereomeric selectivity when reacted with enatiomerically pure aldehydes.

REFERENCES:
patent: 4537773 (1985-08-01), Sheravi
patent: 4644075 (1987-02-01), Masamune

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