Title:
BINAPHTHOL DERIVATIVE AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3252491
Kind Code:
B2
Abstract:
PURPOSE: To provide a new compound useful as a raw material for catalyst for asymmetric synthesis.
CONSTITUTION: 7,7'-Dimethyl-1,1-bi-2-naphthol of formula. The compound can be produced by the oxidative coupling of 7-methyl-2'-naphthol in the presence of a cupric salt [preferably copper(II) nitrate] and an amine (e.g. phenetylamine such as α-phenetylamine) preferably in an alcohol (e.g. methanol). The reaction is carried out preferably at -20 to +80°C by using usually 1-5 equivalent of the cupric salt and 1-20 equivalent of the amine based on the 7-methyl-2- naphthol. The 7-methyl-2-naphthol used as a starting raw material can be produced e.g. from 2-methylnaphthalene.
Inventors:
Isao Kurimoto
Kazunori Iwakura
Masayoshi Nanai
Kazunori Iwakura
Masayoshi Nanai
Application Number:
JP29694992A
Publication Date:
February 04, 2002
Filing Date:
November 06, 1992
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
B01J27/055; B01J27/122; B01J27/232; B01J31/02; C07B61/00; C07C37/11; C07C37/82; C07C39/14; (IPC1-7): C07C39/14; B01J27/055; B01J27/122; B01J27/232; B01J31/02; C07C37/11; C07C37/82
Domestic Patent References:
| JP60181044A |
Other References:
Ｊ．Ａｍ．Ｃｈｅｍ．Ｓｏｃ．，１９８１，Ｎｏ．１０３，Ｐ３９６４−３９６６
Attorney, Agent or Firm:
Takashi Kuboyama (1 person outside)
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