Process for the preparation of chlorothiazole derivatives
申请人:Takeda Chemical Industries, Ltd.
公开号:US05180833A1
公开(公告)日:1993-01-19
Novel processes for preparing 2-chlorothiazoles, useful as an intermediate for insecticides, from allyl isothiocyanate derivatives having the formula [II]: ##STR1## wherein X represents a leaving group, are simple and convenient reaction procedures under mild conditions without need of a large excess of a chlorinating agent. Further, processes for preparing 5-(aminomethyl)-2-chlorothiazole or salts thereof from the compound [II] achieve higher yields by simple, convenient and inexpensive procedures.
Guanidine derivatives, their production and insecticides
申请人:Takeda Chemical Industries, Ltd.
公开号:US05034404A1
公开(公告)日:1991-07-23
An insecticidal composition containing a guanidine derivative of the formula: ##STR1## wherein R.sup.1 is an optionally substituted homocyclic or heterocyclic group, n is 0 or 1, R.sup.2 is a hydrogen atom or an optionally substituted hydrocarbon group, R.sup.3 is a primary, secondary or tertiary amino group, X is an electron attractive group such as nitro or trifluoroacetyl group, provided that when n is 0, R.sup.1 is an optionally substituted heterocyclic group or a salt thereof.
Guanidine derivatives their production and insecticides
申请人:Takeda Chemical Industries, Ltd.
公开号:US05633375A1
公开(公告)日:1997-05-27
An insecticidal composition containing a guanidine derivative of the formula: ##STR1## wherein R.sup.1 is an optionally substituted homocyclic or heterocyclic group, n is 0 or 1, R.sup.2 is a hydrogen atom or an optionally substituted hydrocarbon group, R.sup.3 is a primary, secondary or tertiary amino group, X is an electron attractive group such as nitro or trifluoroacetyl group, provided that when n is 0, R.sup.1 is an optionally substituted heterocyclic group or a salt thereof.