发明授权
US4661641A Substituted alkynes useful as intermediates in the synthesis of
carotenoids
失效
用作合成类胡萝卜素的中间体的取代炔烃
- 专利标题： Substituted alkynes useful as intermediates in the synthesis of carotenoids
- 专利标题（中）： 用作合成类胡萝卜素的中间体的取代炔烃
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申请号： US614607申请日： 1984-05-29
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公开(公告)号： US4661641A公开(公告)日： 1987-04-28
- 发明人: Teodor Lukac , Milan Soukup , Erich Widmer
- 申请人： Teodor Lukac , Milan Soukup , Erich Widmer
- 申请人地址： NJ Nutley
- 专利权人： Hoffmann-La Roche Inc.
- 当前专利权人： Hoffmann-La Roche Inc.
- 当前专利权人地址： NJ Nutley
- 优先权： CHX3153/83 19830609; CHX5583/83 19831013
- 主分类号： B01J31/02
- IPC分类号： B01J31/02 ; C07B61/00 ; C07C29/60 ; C07C31/135 ; C07C33/14 ; C07C35/18 ; C07C403/00 ; C07C31/20 ; C07C53/134
摘要：
Compounds of the formula ##STR1## wherein n is either 0 or 1; R.sup.1 and R.sup.2 is hydrogen and the other is hydrogen, hydroxy, oxo group, a protected hydroxy or protected oxo group; R.sup.3 is hydroxy oxo group, .dbd.CH--CH.sub.2 --OH, .dbd.CH--CHO or one of the foregoing groups where the hydroxy or oxo functions are protected; R.sup.4 is --CO--OR.sup.6, --CO--R.sup.6, --CO--NR.sup.6 R.sup.7, --CO--Cl or --SO.sub.2 --R.sup.6 ; R.sup.6 is saturated or aromatic hydrocarbon; and R.sup.7 is saturated or aromatic hydrocarbon or hydrogen,are converted by cleavage of R.sup.4 OH into corresponding cycloalkenes and protecting groups, if present, are hydrolyzed.The compounds obtained are valuable intermediates in carotenoid syntheses.
公开/授权文献
- US5612116A Decorative transfer sheet with foam backing layer 公开/授权日：1997-03-18
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