Tandem Ring-Opening/Ring-Closing Metathesis Polymerization: Relationship between Monomer Structure and Reactivity
作者:Hyeon Park、Ho-Keun Lee、Tae-Lim Choi
DOI:10.1021/ja4039278
日期:2013.7.24
ring-opening/ring-closing metathesis (RO/RCM) polymerization via relay-type mechanism. Furthermore, living polymerization was achieved when a third-generation Grubbs catalyst was used. Here, we present a full account on this tandem polymerization by investigating how various structural modifications of the monomers affected the reactivity of the tandem polymerization. We observed that changing the ring size of the
Radical cyclisations of dienes and enynes using phosphorus- and sulfur-centred radicals
作者:Julie E. Brumwell、Nigel S. Simpkins、Nicholas K. Terrett
DOI:10.1016/s0040-4020(01)89360-1
日期:1994.1
Reaction of a number of 1,6-diene or enyne systems with TolSO2SePh, under freeradical conditions, results in selenosulfonylation with concomitant CC bond formation, to give cyclised alkyl or vinylsulfones containing the synthetically useful phenylselenyl functionality. Similar cyclisations are possible by using Ph2PH in place of TolSO2SePh, resulting in the formation of cyclic phosphine or vinyl