Efficient synthesis of furan sulfonamide compounds useful in the

Details Efficient synthesis of furan sulfonamide compounds useful in the Efficient synthesis of furan sulfonamide compounds useful in the

1999-05-26

2000-02-08

Trinh, Ba K.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549486, 549508, C07D30746, C07D30764

Patent

active

060229845

ABSTRACT:
An efficent synthesis of furan sulfonamide compounds of formula ##STR1## comprising reacting a compound of formula 11 with a Grignard reagent in a reaction inert solvent, wherein R' is (C.sub.1 -C.sub.6)alkyl. The compound of formula II is prepared by reacting a compound of formula III with a compound of formula IV wherein R' is (C.sub.1 -C.sub.6)alkyl with a chorinating reagent and an acid scaverger in an inert solvent. The invention also includes a novel compound of the formula ##STR2## wherein R' is (C.sub.1 -C.sub.6)alkyl and Q is halo, hydroxy or amino.

REFERENCES:
patent: 4477679 (1984-10-01), Petrocine et al.
patent: 5470991 (1995-11-01), Huber

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