Process for preparing cyclopentyl bromide

Details Process for preparing cyclopentyl bromide Process for preparing cyclopentyl bromide

1996-07-05

1998-04-28

Siegel, Alan

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

Organic compounds

Halogen containing

570248, C07C 2100

Patent

active

057446636

ABSTRACT:
It has been found that cyclopentene and hydrogen bromide can be continuously reacted in a simple manner to give cyclopentyl bromide in good yields and good selectivities if the reaction is carried out in the presence of a heterogeneous catalyst. The reaction can be carried out continuously and unreacted cyclopentene and possibly other constituents can be recirculated to the reaction.

REFERENCES:
patent: 3763250 (1973-10-01), Rai et al.
patent: 3812212 (1974-05-01), Gordon
Ionic Chlorination (Bromination of Alkanes and Cycloalkanes with Methylene Chloride (Bromide)/Antimony Pentfluoride.sup.1, Olah et al, J. Org. Chem., 54, 1463-1465 (1989).
A Synthetic Procedure for Secondary Bromides from Alcohols, Jenkins et al, J. Org. Chem., 27, 624-625 (1962).
Noller et al, J. Am. Chem. Soc., 48, 1084-1085 (1926).
Higher Hydrocarbons..sup.1 II. Five 11-Substituted Heneicosanes, Whitmore et al, J. Am. Chem. Soc., 64, 1801-1802 (1942).
Organoboranes for Synthesis . . . via Hydroboration, Tetrahedron vol. 44, No. 10, pp. 2763-2772 (1988).

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