The present invention provides compounds which upon thermolyis, hydrolysis or both, release an odorant molecule. They find utility, for example, in tobacco, in tobacco paper, and as additives to food, beverages or gum. These compounds are dicarboalkoxy dioxolane derivatives having the following formula: ##STR1## wherein R.sup.1 and R.sup.2 are, independently, --CO.sub.2 R.sup.3 wherein R.sup.3 is --H.sub.3 or lower alkyl, provided that in at least one of R.sup.1 and R.sup.2, R.sub.4 is lower alkyl; wherein Z is a direct bond, or --CH.dbd.C(R.sup.4)--; where R.sup.4 is an alkyl group; and Y is, when Z is a direct bond, ##STR2## where R.sup.5 is lower alkyl; and Y, when Z is --CH.dbd.C(R.sup.4)--, ##STR3## where R.sup.6 is H, lower alkyl or OR.sup.7, where R.sup.7 is H or lower alkyl.
本发明提供了化合物,经热解、
水解或两者同时释放气味分子。例如,在烟草、烟草纸和作为食品、饮料或口香糖添加剂中发现了它们的用途。这些化合物是具有以下结构的二
羧酸二烷氧基二氧兰衍
生物:其中R^1和R^2独立地为--CO_2R^3,其中R^3为--H_3或较低烷基,但在R^1和R^2中至少一个中,R^4为较低烷基;其中Z为直键或--CH.dbd.C(R^4)--;其中R^4为烷基基团;当Z为直键时,Y为;当Z为--CH.dbd.C(R^4)--时,Y为。