Process for the preparation of dihalotetrahydrofurans from dihyd

Details Process for the preparation of dihalotetrahydrofurans from dihyd Process for the preparation of dihalotetrahydrofurans from dihyd

1997-01-07

1998-01-20

Dentz, Bernard

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D30756

Patent

active

057102899

ABSTRACT:
Disclosed is a process for the preparation of 3,4-dichlorotetrahydrofuran, 3,4-dibromotetrahydrofuran, 2,3-dichlorotetrahydrofuran, and 2,3-dibromotetrahydrofuran by the reaction of 2,5- or 2,3-dihydrofuran with chlorine or bromine in the presence of a quaternary onium halide compound. The reaction preferably is carried out by the addition of the dihydrofuran and chlorine or bromine to an organic, halogenation solvent containing chlorine or bromine and the quaternary onium halide compound.

REFERENCES:
patent: 5103028 (1992-04-01), Falling et al.
L. Crombie, et al., J. Chem. Soc., 136 (1956).
A. Nersasian, I. Eng. Chem. Prod. Res. Dev., 2 138 (1963).
W. Reppe, et al., Annalen., 596, 1, 138 (1955).
H. R. Buys, et al., Tetrahedron, 24, 3019 (1968).
R. Paul, et al., Memoires Presentes a la Societe Chimique, 669 (1950).
S. Olsen, Acta Chem. Sand., 4, 473 (1950).
Crombie, et al., J. Chem. Soc., Perkin Trans. 1, 1971 (1985).
Pezechk et al., Tetrahedron Letters, vol.27, No. 32, pp. 3715-3718, 1986.

Affiliated with

Also associated with

Rating

Process for the preparation of dihalotetrahydrofurans from dihyd does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of dihalotetrahydrofurans from dihyd, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of dihalotetrahydrofurans from dihyd will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-726485