Method of producing alkaline-earth salts of aliphatic .beta.-keto
compounds
    2.
    发明授权
    Method of producing alkaline-earth salts of aliphatic .beta.-keto compounds 有权
    脂肪族β-酮化合物的碱土盐的制备方法

    公开(公告)号:US6093844A

    公开(公告)日:2000-07-25

    申请号:US142783

    申请日:1998-09-15

    CPC分类号: C07C49/92 C07C45/77 C07C67/30

    摘要: Proposed is a method of producing alkaline-earth salts of aliphatic .beta.-keto compounds by reacting alkaline-earth hydroxides with aliphatic .beta.-ketoesters and/or .beta.-diketones in the absence of solvent to give the corresponding alkaline-earth salts. The .beta.-keto compound is added in portions to the powdered alkaline-earth hydroxide and the reaction mixture subsequently dried. Good yields are obtained of a fine-grained, light colored product.

    摘要翻译: PCT No.PCT / EP97 / 01156 Sec。 371日期:1998年9月15日 102(e)1998年9月15日PCT 1997年3月7日PCT PCT。 公开号WO97 / 34859 日期1997年9月25日提出的方法是在不存在溶剂的情况下使碱土金属氢氧化物与脂族β-酮酯和/或β-二酮反应生成脂肪族β-酮化合物的碱土金属盐,得到相应的碱土金属 盐。 将β-酮化合物分批加入粉状碱土金属氢氧化物中,然后将反应混合物干燥。 获得了细颗粒,浅色产品的良好产率。

    O-Acylation using organothallium compounds
    6.
    发明授权
    O-Acylation using organothallium compounds 失效
    使用有机铊化合物进行O-酰化

    公开(公告)号:US3947488A

    公开(公告)日:1976-03-30

    申请号:US471925

    申请日:1974-05-21

    摘要: Thallous salts of .beta.-dicarbonyl compounds, prepared by reaction of the .beta.-dicarbonyl compounds with a thallous alkoxide, are treated with alkyl halides to give C-alkyl products in high yield, with acyl halides at room temperature to give C-acyl products, and with acyl halides at low temperatures to give O-acyl products. Thallous phenolates are esterified with acyl or aroyl halides. Anhydrides are also prepared, as are biaryls and bi-sec-alkyls. N-Heterocyclics, including purines and pyrimidines, are N-alkylated. Lactams are O-acylated or N-alkylated.

    摘要翻译: 通过β-二羰基化合物与铊醇盐反应制备的β-二羰基化合物的铊盐用烷基卤化物处理,以高产率与酰基卤在室温下反应得到C-酰基产物, 并在低温下与酰卤反应,得到O-酰基产物。 柠檬酸酚酯与酰基或芳酰基卤酯化。 还制备了酸酐,联芳基和双仲烷基也是如此。 包括嘌呤和嘧啶在内的N-杂环是N-烷基化的。 内酰胺是O-酰化或N-烷基化的。