Photochemical formation and decomposition of 8-[β-arylethenyl]-2,2,6-trimethyl-7,9,10-trioxa-tricyclo[6.2.2.01,6]dodec-11-ene to novel 6-hydroxy-1,7,7-trimethyl-2-oxa-bicyclo[4.4.0]dec-4-en-3-one in the presence of oxygen
作者:Vishal Sharma、Vivek Gupta、Sumati Anthal、Ajit K. Saxena、Mohan Paul S. Ishar
DOI:10.1016/j.tetlet.2012.08.028
日期:2012.10
Irradiation of (E,E)-arylidene-β-ionones in the presence of oxygen leads to the formation of 8-[β-arylethenyl]-2,2,6-trimethyl-7,9,10-trioxa-tricyclo[6.2.2.01,6]dodec-11-enes (3). However, prolonged irradiation in the presence of oxygen leads to their conversion to 6-hydroxy-1,7,7-trimethyl-2-oxa-bicyclo[4.4.0]dec-4-en-3-one (4), apparently proceeding through addition of oxygen to the side chain π-bond
(照射E,E [β)-arylidene-β-紫罗兰酮在氧引线的存在,以8-形成- arylethenyl] -2,2,6-三甲基- 7,9,10-三氧杂-三环[6.2 .2.0 1,6 ] dodec-11-enes(3)。但是,在氧存在下长时间照射会导致其转化为6-羟基-1,7,7-三甲基-2-氧杂双环[4.4.0] dec-4-en-3-one(4)通过向3中的侧链π键添加氧来进行