US 5,684,196 A · Process of producing 2-iminothiazoline derivatives and process of producing their intermediates

Abstract

There is disclosed a process of producing a 2-iminothiazoline derivative of the general formula II!, characterized in that a thiourea derivative of the general formula I! is treated with an acid. Also disclosed are a process of producing an N-substituted N-arylcyanamide derivative of the general formula VI!, characterized in that an N-arylcyanamide derivative of the general formula IV! is reacted with an allyl halide derivative of the general formula V! in an aprotic polar solvent in the presence of an iodide and an alkali metal carbonate; and a process of producing an N-substituted N-arylthiourea derivative of the general formula VII!, characterized in that an N-substituted N-arylcyanamide derivative of the general formula VI! obtained as described above is further reacted with a chemical species which generates sulfide ion or hydrogensulfide ion.

Claims5

Dependent claims

An N-substituted N-arylcyanamide derivative of the general formula:

##STR17## wherein R.sup.3, R.sup.4 and R.sup.5 are the same or different, each of which is hydrogen, optionally substituted alkyl or optionally substituted aryl;
R.sup.12 is optionally substituted aryl;
and X is halogen, with the exception of N-phenyl-N-(2-bromo-2-propenyl)cyanamide.

Dependencies are inferred from the claim text.

Facts

Application

08/659,545Filed 6 Jun 1996 · division

Priority

JP 4-32525912 Apr 1992

Granted

4 Nov 1997

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

C07C 335/16
Derivatives of thiourea: having nitrogen atoms of thiourea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
C07C 261/04
Derivatives of cyanic acid: cyanamides
C07C 335/18
Having nitrogen atoms of thiourea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton: being further substituted by…
C07D 277/40
Nitrogen atoms: unsubstituted amino or imino radicals

Process of producing 2-iminothiazoline derivatives and process of producing their intermediates

Life of this patent

Process of producing 2-iminothiazoline derivatives and process of producing their intermediates

Life of this patent

Abstract

Claims5