Production process and intermediate of tetrazole compound
申请人:Sumitomo Chemical Company, Limited
公开号:US05874593A1
公开(公告)日:1999-02-23
There are disclosed an industrially favorable process for producing a tetrazole compound of general formula (1): ##STR1## characterized in that a nitrile of general formula (2): R.sup.1 CN (2) is reacted with hydrazine or a salt thereof in the presence of a catalyst, followed by reaction with a nitrous acid compound of general formula (3): ANO.sub.2 (3) or a nitrile of general formula (2) is reacted with hydrogen sulfide, followed by reaction with an alkyl halide of general formula (4): R.sup.4 J (4) with hydrazine or a salt thereof, and then with a nitrous acid compound of general formula (3); and an intermediate of general formula (5): R.sup.1 C(=R.sup.5)R.sup.6 (5) which is useful for the production of the tetrazole compound (in which R.sup.1 to R.sup.6, A and J in the above formulas are as defined in the specification).
PROCESS FOR PRODUCING TETRAZOLE COMPOUND AND INTERMEDIATE THEREFOR
申请人:SUMITOMO CHEMICAL COMPANY LIMITED
公开号:EP0711762A1
公开(公告)日:1996-05-15
There are disclosed an industrially favorable process for producing a tetrazole compound of general formula (1):
characterized in that a nitrile of general formula (2):
R¹CN (2)
is reacted with hydrazine or a salt thereof in the presence of a catalyst, followed by reaction with a nitrous acid compound of general formula (3):
ANO₂ (3)
or a nitrile of general formula (2) is reacted with hydrogen sulfide, followed by reaction with an alkyl halide of general formula (4):
R⁴J (4)
with hydrazine or a salt thereof, and then with a nitrous acid compound of general formula (3); and an intermediate of general formula (5):
R¹C(=R⁵)R⁶ (5)
which is useful for the production of the tetrazole compound (in which R¹ to R⁶, A and J in the above formulas are as defined in the specification).