Invention Grant
US3669979A Novel process for the production of 2-benzothiazolyl-phenol and derivatives thereof employing phosphorus trichloride as a catalyst
失效
用于生产作为催化剂的磷酸三氯乙酯的2-苯并噻唑酚及其衍生物的新工艺
- Patent Title: Novel process for the production of 2-benzothiazolyl-phenol and derivatives thereof employing phosphorus trichloride as a catalyst
- Patent Title (中): 用于生产作为催化剂的磷酸三氯乙酯的2-苯并噻唑酚及其衍生物的新工艺
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Application No.: US3669979DApplication Date: 1967-12-14
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Publication No.: US3669979APublication Date: 1972-06-13
- Inventor: FREYERMUTH HARLAN B
- Applicant: GAF CORP
- Assignee: GAF Chemicals Corp
- Current Assignee: GAF Chemicals Corp
- Priority: US69037667 1967-12-14
- Main IPC: C07D235/18
- IPC: C07D235/18 ; C07D263/56 ; C07D263/57 ; C07D277/66 ; C07D91/44 ; C07D49/38 ; C07D85/48
Abstract:
A method of preparing heterocyclic derivatives selected from the formulae:
WHEREIN X is selected from hydrogen, lower alkyl, lower alkoxy, and halogen; Y is selected from hydroxy and X; Z is selected from nitrogen, oxygen, and sulfur by reacting an o- aminobenzenethiol, o-aminophenol, or o- aminoaniline and substituted derivatives thereof with an ortho-substituted benzoic acid or 2-substituted naphtholic acid in the presence of a catalyst comprising phosphorus trichloride. The compounds produced by the process of the present invention are useful as stabilizers in various organic media, e.g., organic plastics, oils, etc. and as intermediates in the production of dyestuffs and fluorescent compounds.
WHEREIN X is selected from hydrogen, lower alkyl, lower alkoxy, and halogen; Y is selected from hydroxy and X; Z is selected from nitrogen, oxygen, and sulfur by reacting an o- aminobenzenethiol, o-aminophenol, or o- aminoaniline and substituted derivatives thereof with an ortho-substituted benzoic acid or 2-substituted naphtholic acid in the presence of a catalyst comprising phosphorus trichloride. The compounds produced by the process of the present invention are useful as stabilizers in various organic media, e.g., organic plastics, oils, etc. and as intermediates in the production of dyestuffs and fluorescent compounds.
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