The synthesis and reactivity of new 2-(N,N-diisopropylamino)-3-methylsulfonyl-1,3,2-benzoxazaphospholes. The utility of the 5-chloro analogue in the one-pot synthesis of oligothiophosphates: [ApsppA, ApspppA, ppp5′A2′ps5′A, m7GpsppA, Apspppp, Apspp]
mechanism for the synthesis of 43, 45 and 47 proceeds via the corresponding (dinucleoside 5′)-cyclometatriphosphite intermediates 50, 54, 52 and the (dinucleoside 5′)-1-thiocyclotriphosphate intermediates 51, 55, 53. The existence of these cyclic P(III) and P(V) intermediates were supported by31P- and1H-NMR spectroscopy. We here also demonstrate that 5-chlorobenzoxazaphosphole 23 can be used to synthesise
Use of 2-(sulphonylamino) phenols as couplers in oxidation colouring
申请人:——
公开号:US20020100125A1
公开(公告)日:2002-08-01
The invention relates to the field of the oxidation dyeing of keratinous fibres and in particular of human keratinous fibers, such as the hair. The invention relates more particularly to the use of certain 2-(sulphonylamino)phenols of following formula (I) as coupler in combination with oxidation dye precursors for
1
the oxidation dyeing of the fibers.
Utilisation de 2-sulphonylamino-phénols comme coupleurs en coloration d'oxydation
申请人:L'OREAL
公开号:EP1205176A1
公开(公告)日:2002-05-15
L'invention concerne le domaine de la teinture d'oxydation des fibres kératiniques, et en particulier des fibres kératiniques humaines telles que les cheveux. Plus particulièrement, l'invention est relative à l'utilisation de certains 2-sulphonylamino-phénols de formule (I) suivante à titre de coupleur en association avec des précurseurs de colorants d'oxydation pour la teinture d'oxydation des fibres.