The present invention provides a diamine derivative or the like represented by the general formula (I):
wherein Q represents an oxygen atom or the like, RG represents a hydrogen atom or the like, RI represents
(wherein p and r may be the same or different, and each represents 0 or the like, RA represents a hydrogen atom or the like, and RB and Rc may be the same or different, and each represents a hydrogen atom or the like), RH represents a hydrogen atom or the like, and RJ represents:
(wherein q and s may be the same or different, and each represents 0 or the like, RD represents a hydrogen atom or the like, and RE and RF may be the same or different, and each represents a hydrogen atom or the like) or the like}, etc.
Novel (phenylsulfonyl)acrylonitrile siloxanes/silanes, and cosmetic/dermatological sunscreen compositions comprised thereof, are well suited for UV-A photoprotecting the skin and/or the hair against the damaging effects of solar radiation.
A method of producing a compound represented by formula (1), including: allowing 1,4-benzoquinone or 1,2-benzoquinone to react with a dithiocarbamate compound represented by formula (2) in a polar solvent:
wherein R
1
and R
2
each independently represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, R
1
and R
2
may be the same or different and may be combined with each other to form a ring, X represents an ion necessary to neutralize the charge of the molecule, m represents an integer of 1 to 2, n represents an integer of 1 to 2, M represents a hydrogen atom, a metal atom or a conjugate acid of a base, p represents an integer of 1 to 4, and q represents an integer of 1 to 4.
New Way to Methylene-2H-azirines and Their Use as Powerful Intermediates for the Stereo- and Regioselective Synthesis of Compounds with Vinylamine Substructure
作者:Joseph Rodolph Fotsing、Klaus Banert
DOI:10.1002/ejoc.200600302
日期:2006.8
New and relativelystable methylene-2H-azirines 1 have been prepared by photolysis of allenyl azides or from 2-halo-2H-azirines by elimination of HX (X = halogen). The reaction of these methylene-2H-azirines with nucleophiles led to the highly stereo- and regio-selective formation of novel 1-aminovinyl derivatives with good to excellent yields. The trapping reactions of the less stable methylene-2H-azirines
Compositions photoprotectrices contenant des dérivés silaniques ou siloxaniques de phénylsulfone acrylonitrile, dérivées de phénylsulfone acrylonitrile et utilisation comme filtre UV
申请人:L'OREAL
公开号:EP1371654A1
公开(公告)日:2003-12-17
La présente invention concerne des compositions cosmétiques à usage topique, en particulier destinées à la photoprotection de la peau et/ou des cheveux, comprenant une quantité efficace d'au moins un dérivé ou un mélange de dérivés silanique ou siloxanique de phénylsulfone acrylonitrile de structure particulière.
La présente invention concerne également de nouveaux dérivés silaniques ou siloxaniques de phenylsulfone acrylonitrile de structure particulière ainsi que leurs utilisations en cosmétique comme filtres UV-A.