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1.发明专利
公开(公告)号：JP5306204B2
公开(公告)日：2013-10-02
申请号：JP2009524992
申请日：2007-07-24
发明人： ヤクステル ラルフ , ジョーベル イリーナ , ベラー マティアス , ハテレイ マーティン , ヴェックベッカー クリストフ , フートマッハー クラウス
IPC分类号： C07C45/75 , B01J31/02 , C07B61/00 , C07C49/17 , C07C49/245 , C07C49/337 , C07C49/82 , C07C319/20 , C07C323/22 , C07D307/46
CPC分类号： C07C319/20 , B01J31/0239 , B01J31/0244 , C07C45/75 , C07C2601/14 , C07D233/28 , C07D233/90 , C07D307/46 , C07C49/82 , C07C49/245 , C07C49/337 , C07C49/17 , C07C323/22
摘要： The present invention relates to the preparation of alpha-hydroxy ketones of the general formula I. In particular, the invention relates to novel imidazolinium carboxylate adducts and to a novel process for using catalytic amounts of imidazolium and imidazolinium carboxylate adducts in the acyloin reaction of aldehydes to prepare hydroxy ketones of the general formula I, where R and R' are the same or different and are each H or a straight-chain or branched and optionally substituted C1-C12-alkyl radical, and R''-H3CSCH2CH2, t-butyl, n-butyl, sec-butyl, n-propyl, i-propyl, an optionally heteroatom-substituted C6-C18-aryl, heteroaryl, C6-C18-arylalkyl, especially phenylmethyl, where phenyl may again be heteroatom-substituted, or heteroalkyl.
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2.发明专利
公开(公告)号：JP2010501019A
公开(公告)日：2010-01-14
申请号：JP2009524992
申请日：2007-07-24
发明人： ジョーベル イリーナ , フートマッハー クラウス , ヴェックベッカー クリストフ , ハテレイ マーティン , ベラー マティアス , ヤクステル ラルフ
IPC分类号： C07C45/75 , B01J31/02 , B01J37/08 , C07B61/00 , C07C49/17 , C07C49/245 , C07C49/337 , C07C49/82 , C07C319/20 , C07C323/22 , C07D233/28 , C07D233/90 , C07D307/46
CPC分类号： C07C319/20 , B01J31/0239 , B01J31/0244 , C07C45/75 , C07C2601/14 , C07D233/28 , C07D233/90 , C07D307/46 , C07C49/82 , C07C49/245 , C07C49/337 , C07C49/17 , C07C323/22
摘要： The present invention relates to the preparation of alpha-hydroxy ketones of the general formula I. In particular, the invention relates to novel imidazolinium carboxylate adducts and to a novel process for using catalytic amounts of imidazolium and imidazolinium carboxylate adducts in the acyloin reaction of aldehydes to prepare hydroxy ketones of the general formula I, where R and R' are the same or different and are each H or a straight-chain or branched and optionally substituted C1-C12-alkyl radical, and R''-H3CSCH2CH2, t-butyl, n-butyl, sec-butyl, n-propyl, i-propyl, an optionally heteroatom-substituted C6-C18-aryl, heteroaryl, C6-C18-arylalkyl, especially phenylmethyl, where phenyl may again be heteroatom-substituted, or heteroalkyl.
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