_二乙酰基二硫缩烯酮与_不饱和酮的加成反应研究.pdfVIP

22 4 V o l. 22, N o. 4 20 10 4 Chem ica lR esea rch and A pp lication Apr. , 2010 : 20 10) , , * 尹彦冰 , 姜海燕, 马 洁, 张宏波, 殷春婧, 李莎莎 , 161006) : ; , ; : O 63 13 : A Study onM ichael addition of , diacetyl keten e th ioacetals and , un saturated ketones * Y IN Y anb ing , JIANG H aiyan, MA J ie, ZHANG H ongbo, Y IN Chunjing, L I Shasha D epartment o f Chem istry and Chem ica l Eng ineering, Q iqihar U niversity, Q iq ihar 16 1006, Ch ina) A bstrac t: , d iacety l ketene th ioaceta ls had been investiga ted as odorless th io l equivalen ts in th iaM ichae l addition reactionU nder solven tfree conditions, a series o f reactions betw een , diace ty l ketene thioaceta ls and , unsaturated ketones w ere carr ied out promo ting by concentra ted hydroch lo ric ac id. T he correspond ing th iaM ichael adduc ts in h igh y ields w e re obta inedFurtherm ore, a mechan ism fo r this th iaM ichae l addition reaction w as proposed pre lmi inary K ey w ord s: , diace tyl ketene th ioaceta ls; , unsa turated ketones; thiaM ichae l addition [ 8, 9] , [ 13 ] [ 10] , , / [ 1113] , [ 4, 5], , , : , , O SR O 1 [ 6, 7]