Synthesis and radical polymerization of 2-methylene-1,4-dioxaspiro-6,7-8,9-dibenzo[4.4]nona-6,8-diene
Synthesis and radical polymerization of 2-methylene-1,4-dioxaspiro-6,7-8,9-dibenzo[4.4]nona-6,8-diene
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2-亚甲基-1,4-二氧杂螺-6,7-8,9-二苯并[4.4]壬那-6,8-二烯的合成及自由基聚合
DOI：
10.1002/pola.1990.080281025
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
T. Endo
中科院分区：
文献类型：
--
作者：
Y. Hiraguri;T. Endo
乙烯基环丙烷、不饱和螺环原碳酸酯、2-亚甲基-4-苯基-1，3-二氧戊环、2-苯基-4-亚甲基-1，3-二氧戊环的自由基开环聚合反应已有报道。最近，我们报道了2，2-二苯基-4-亚甲基-1，3-二氧戊环（1）在自由基引发剂存在下，于氯苯中于120 ℃进行定量开环聚合，并伴有二苯甲酮的消除，得到聚酮？。6本文报道了2-亚甲基-1，4-二氧杂螺-6，7-8，9-二苯并[4.41]壬-6，8-二烯（3）的合成及其自由基聚合行为，以评价芴基对3开环聚合的影响。
The radical ring-opening polymerization of vinylcyclopropanes, unsaturated spiro orthocarbonate,'2-methylene-4-pheny1-1, 3-dio~ olane,~ and 2-phenyl-4-methylene-1, 3-dioxolane' have already reported. Recently, we have reported that 2, 2-diphenyl-4-methylene-1, 3-dioxolane(l) undergoes the quantitative ring-opening polymerization accompanying the elimination of benzophenone in the presence of radical initiator at 12OOC in chlorobenzene to obtain a polyketone?. 6 In this note, we report the synthesis and radical polymerization behavior of 2-methylene-l, 4-dioxaspiro-6, 7-8, 9-dibenzo [4.41 nona-6, s-diene (3) in order to estimate the effect of the fluorene group on the ring-opening polymerization of 3.