Process for producing thiazole compound

Details Process for producing thiazole compound Process for producing thiazole compound

2011-07-12

2011-07-12

Stockton, Laura L. (Department: 1626)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07977490

ABSTRACT:
A process for producing a thiazole compound of the formula (3):wherein X1is a hydrogen atom or a halogen atom, which comprises reacting a compound of the formula (1):wherein X1is as defined above, and X2represents a halogen atom, with ammonia and formaldehyde to obtain a hexahydrotriazine compound of the formula (2):wherein X1is as defined above, and reacting the resulting hexahydrotriazine compound with hydroxylamine under acidic conditions. According to this process, the thiazole compound of the formula (3) can be industrially advantageously produced using inexpensive ammonia with suppressing the formation of a byproduct of the formula (4):wherein X1is as defined above.

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