TY - JOUR
T1 - Cyclization of diphenylacetylene on methylchromium σ-complexes II. Cyclic and linear condensations
AU - Michman, M.
AU - Zeiss, H. H.
PY - 1970/11
Y1 - 1970/11
N2 - The reactions of diphenylacetylene with methylchromium systems lead to the formation of condensation products, of which the following have been isolated and identified: cis,cis-1,2,3,4-tetraphenyl-1,3-butadiene; hexaphenylbenzene; 1,2,3-triphenylnaphthalene: 1-methyl-2,3,4-triphenylnaphthalene: 1,2,3,4-tetraphenyl-1,3-cyclopentadiene and 1,2,4,5-tetraphenylbenzene. It is evident that methyl groups of the chromium complex participate in these cyclic condensations via insertions of methylene (carbene) groups into the ring skeleton. These processes are also accompanied by hydrogen-transfer reactions.
AB - The reactions of diphenylacetylene with methylchromium systems lead to the formation of condensation products, of which the following have been isolated and identified: cis,cis-1,2,3,4-tetraphenyl-1,3-butadiene; hexaphenylbenzene; 1,2,3-triphenylnaphthalene: 1-methyl-2,3,4-triphenylnaphthalene: 1,2,3,4-tetraphenyl-1,3-cyclopentadiene and 1,2,4,5-tetraphenylbenzene. It is evident that methyl groups of the chromium complex participate in these cyclic condensations via insertions of methylene (carbene) groups into the ring skeleton. These processes are also accompanied by hydrogen-transfer reactions.
UR - http://www.scopus.com/inward/record.url?scp=49849112618&partnerID=8YFLogxK
U2 - 10.1016/S0022-328X(00)86216-6
DO - 10.1016/S0022-328X(00)86216-6
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AN - SCOPUS:49849112618
SN - 0022-328X
VL - 25
SP - 161
EP - 166
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
IS - 1
ER -