SYNTHETIC METHOD OF beta-LACTAM
    321.
    发明专利

    公开(公告)号:JP2002193926A

    公开(公告)日:2002-07-10

    申请号:JP2000389408

    申请日:2000-12-21

    Abstract: PROBLEM TO BE SOLVED: To provide the synthetic method of a β-lactam in the presence of high-temperature and high-pressure water, and a manufacturing method of the β lactam. SOLUTION: This synthetic method of the β-lactam is characterized in that the β-lactam is synthesized by reacting a β-amino acid in the presence of high- temperature and high-pressure water. In this case, characteristically, β-lactam is rapidly synthesized by cyclizing the β-amino acid under the condition that the water temperature is 200 deg.C or higher and the water pressure is 10 MPa or higher. The manufacturing method of the β-lactam is characterized in that the β-lactam is synthesized by reacting the β-amino acid in the presence of the high-temperature and high-pressure water and then separated and purified with a separating agent for column separation.

    METHOD FOR CLOSING RING OF AMINO ACID

    公开(公告)号:JP2002121183A

    公开(公告)日:2002-04-23

    申请号:JP2000314730

    申请日:2000-10-16

    Abstract: PROBLEM TO BE SOLVED: To improve a method for closing a ring of an amino acid for producing a ring closure compound used for an intermediate for producing a medicine or a reagent intermediate from the amino acid, improving the yield and purity of the product, reducing its reacting time, not requiring a catalyst and not generating byproducts. SOLUTION: This method for closing the ring of the amino acid is provided by bringing high temperature and high pressure water at 100-400 deg.C temperature and 5-100 MPa pressure in contact with the amino acid for dehydrating the amino acid to perform the ring closure of the amino acid.

    326.
    发明专利
    失效

    公开(公告)号:JP2001514076A

    公开(公告)日:2001-09-11

    申请号:JP2000508655

    申请日:1998-08-24

    327.
    发明专利
    失效

    公开(公告)号:JP2001500123A

    公开(公告)日:2001-01-09

    申请号:JP51250998

    申请日:1997-08-28

    329.
    发明专利
    失效

    公开(公告)号:JP2000511919A

    公开(公告)日:2000-09-12

    申请号:JP50122298

    申请日:1997-06-13

    Abstract: PCT No. PCT/EP98/03098 Sec. 371 Date Dec. 9, 1998 Sec. 102(e) Date Dec. 9, 1998 PCT Filed Jun. 13, 1997 PCT Pub. No. WO97/47596 PCT Pub. Date Dec. 18, 1997Crude caprolactam is purified by reaction with a complex hydride of boron or of aluminum.

    330.
    发明专利
    失效

    公开(公告)号:JP2000504743A

    公开(公告)日:2000-04-18

    申请号:JP53002097

    申请日:1997-02-12

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