Process for the preparation of nitroguanidine derivatives

Details Process for the preparation of nitroguanidine derivatives Process for the preparation of nitroguanidine derivatives

1991-10-16

1993-09-14

Shah, Mukund J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544 8, 544 53, 544 54, 544 582, 544 584, 544 67, 544 68, 544 96, 544 97, 544 98, 544182, 544194, 544212, 544224, 544298, 544238, 544239, 544240, 544241, 544316, 544322, 544333, 544334, 544335, 544336, 546114, 546118, 546125, 546275, 546280, 546284, 546286, 546288, 546290, 546296, 546300, 546301, 546302, 546304, 546312, 546338, 548127, 548128, 548134, 548136, 548143, 548146, 548182, 548183, 548184, 548186, 548189, 548190, 548191, 548193, 548214, 548233, 548240, 548243, 548244, 548245, 548247, 548250, 548254

Patent

active

052450406

ABSTRACT:
A process for the preparation of 1,3-disubstituted 2-nitroguanidines of the formula I ##STR1## in which R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl, R.sub.2 is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 cycloalkyl or a radical --CH.sub.2 B; A is an unsubstituted or mono- to tetrasubstituted aromatic or non-aromatic, monocyclic or bicyclic heterocyclic radical, which may contain one or two substituents from the group comprising C.sub.1 -C.sub.3 haloalkyl having 1 to 7 halogen atoms, cyclopropyl, halocyclopropyl having 1 to 3 halogen atoms, C.sub.2 -C.sub.3 alkenyl, C.sub.2 -C.sub.3 alkynyl, C.sub.2 -C.sub.3 haloalkenyl and C.sub.2 -C.sub.3 haloalkynyl having 1 to 4 halogen atoms, C.sub.1 -C.sub.3 haloalkoxy having 1 to 7 halogen atoms, C.sub.1 -C.sub.3 alkylthio, C.sub.1 -C.sub.3 haloalkylthio having 1 to 7 halogen atoms, allyloxy, propargyloxy, allylthio, propargylthio, haloallyloxy, haloallylthio, cyano and nitro and one to four substituents from the group comprising C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy and halogen; and B is optionally substituted phenyl or pyridyl, which comprises hydrolysing a compound of the formula II ##STR2## in which R.sub.3 is unsubstituted or substituted C.sub.1 -C.sub.10 alkyl, C.sub.3 -C.sub.6 cycloalkyl, phenyl or benzyl.
The compounds of the formula I are suitable as intermediates for the preparation of pesticides.

REFERENCES:
patent: 4937340 (1990-06-01), Huang
Derwent Abstract 92-045988/06 of the Japanese 3291-267-A, 1990.

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