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    • 9. 发明申请
    • Process for preparing 5,6-diethyl-2,3-dihydro-1H-inden-2-amine
    • 制备5,6-二乙基-2,3-二氢-1H-茚-2-胺的方法
    • US20030187301A1
    • 2003-10-02
    • US10367402
    • 2003-02-14
    • Mahavir PrashadBin HuOlivier Lohse
    • C07C235/66
    • C07C209/62C07C211/42C07C233/06C07C233/32C07C233/33C07C2602/08
    • A process for preparing 5,6-diethyl-2,3-dihydro-1H-inden-2-amine and acid addition salts thereof from 2-aminoindan. The process comprises protecting the amino group of 2-aminoindan, acetylating the ring in the protected compound, reducing the acetyl group to ethyl to form a monoethyl derivative, acetylating the monoethyl derivative, reducing the acetyl group to form a diethyl derivative, deprotecting the latter by hydrolysis and recovering the product in free or salt form. The process does not use deleterious Grignard reagents or nitrites such as isoamyl nitrite, and provides high regioselectivity and high yield of 5,6-diethyl-2,3-dihydro-1H-inden-2-amine. In addition, the process uses acetyl halide as both a reactant and a solvent.
    • 从2-氨基茚满制备5,6-二乙基-2,3-二氢-1H-茚-2-胺及其酸加成盐的方法。 该方法包括保护2-氨基茚满的氨基,乙酰化保护的化合物中的环,将乙酰基还原为乙基以形成单乙基衍生物,乙酰化单乙基衍生物,还原乙酰基以形成二乙基衍生物,使后者脱保护 通过水解并以游离或盐形式回收产物。 该方法不使用有害的格氏试剂或亚硝酸盐,例如亚硝酸异戊酯,并且提供高的区域选择性和高收率的5,6-二乙基-2,3-二氢-1H-茚-2-胺。 此外,该方法使用乙酰卤作为反应物和溶剂。