[EN] COMPOUNDS CAPABLE OF RELEASING FRAGRANT COMPOUNDS<br/>[FR] COMPOSÉS CAPABLES DE LIBÉRER DES COMPOSÉS ODORIFÉRANTS
申请人:GIVAUDAN SA
公开号:WO2012085287A1
公开(公告)日:2012-06-28
Provided is class of compounds of formula (I) wherein X, R1, R2 and R3 have the same meaning as given in the specification capable of releasing fragrant compounds in a controlled manner into the surroundings.
the other hand, thermolysis of 1-indanyltriphenylphosphonium bromide gave indene and triphenylphosphonium bromide. From deuterium and 13 C-labeled experiments, the interconversion of primary and secondary cation intermediates was suggested. No neighboring phenyl group (phenoniumcation intermediate) interaction was observed.
1-芳乙基三苯基溴化鏻热重排为2-芳乙基三苯基溴化鏻。通过使苯乙烯、HBr 和三苯基膦反应直接形成 2-芳乙基溴化鏻。另一方面,1-茚基三苯基溴化鏻热解得到茚和三苯基溴化鏻。从氘和 13 C 标记的实验中,提出了初级和次级阳离子中间体的相互转化。没有观察到相邻的苯基(苯鎓阳离子中间体)相互作用。
Perturbations by Phenyl on the 1,5-Hydrogen Shift in 1,3(<i>Z</i>)-Pentadiene. Another Chameleonic Transition Region?
作者:William von E. Doering、Edmund J. Keliher、Xin Zhao
DOI:10.1021/ja040106k
日期:2004.11.1
The acyclic 1,5-dienyl hydrogen shift is accelerated by radical-stabilizing phenyl substituents without regard to the type of position occupied in the 1,3(Z)-pentadiene system. 1-Phenyl-5-p-tolyl-1,3(Z)-pentadiene has a corrected energy of activation 5.8 kcal mol(-)(1) lower than that of the parent, while the 2- and 3-phenyl analogues, examined in cyclic systems specifically designed to obviate the
A compound of the formula: ##STR1## wherein R is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, X is a C.sub.3 -C.sub.4 alkylene group or a C.sub.3 alkenylene group, Y is a hydrogen atom or a chlorine atom, A is a methyl group or a methoxy group and the substituted ureido group is present at the m- or p-position to the group of the formula: ##STR2## which is useful as a herbicide.