Preparation of 5-(2,2,2-trihaloethyl)-dialkyl-tetrahydrofuran-2-

Details Preparation of 5-(2,2,2-trihaloethyl)-dialkyl-tetrahydrofuran-2- Preparation of 5-(2,2,2-trihaloethyl)-dialkyl-tetrahydrofuran-2-

Filed on

1980-08-14

Date issued

1982-03-16

Examiner

Jiles, Henry R.

Patent Class

Chemistry of carbon compounds

SubClass

Miscellaneous organic carbon compounds

SubSubClass

C-metal

Other Related Categories

2603265D, 2603477, 544152, 546214, 204158R, 204158HA, C07D30732

Type

Patent

Status

active

Patent number

043200621

Description

ABSTRACT:
Preparation of 5-(2,2,2-trihaloethyl)-4,4-dialkyl-tetrahydro-furan-2-ones of the formula I ##STR1## where R.sup.1 and R.sup.2 are each alkyl of 1 to 4 carbon atoms and X is halogen, by reacting a carboxylic acid amide of the formula II ##STR2## where R.sup.3 and R.sup.4 are each alkyl of 1 to 4 carbon atoms, aralkyl of 7 to 9 carbon atoms or aryl of 6 to 10 carbon atoms or together with the nitrogen on which they are present as substituents form a 5-membered or 6-membered saturated ring which may contain a second hetero-atom, with a carbon tetrahalide of the formula III

REFERENCES:
patent: 3884916 (1975-05-01), Janssen et al.
patent: 4215050 (1980-07-01), Lantzsch

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