The electronic structure and second-order nonlinear optical properties of donor-acceptor acetylenes: a detailed investigation of structure-property relationships
作者:Albert E. Stiegman、Eva Graham、Kelly J. Perry、Lutfur R. Khundkar、L. T. Cheng、Joseph W. Perry
DOI:10.1021/ja00020a030
日期:1991.9
increases in the magnitude of beta. For this class of molecules, the increase is dominated by the energy of the intramolecularcharge-transfer transition, while factors such as the ground to excited-state dipole moment change and the transition-moment integral are much less important. Increasing the conjugation length from one to two acetylene linkers did not result in an increase in the value of beta;
Improved Synthesis of Methyl Alkoxyacetylenecarboxylates
作者:Francisco Camps、Josep Coll、Amadeu Llebaria、Josep M. Moretó、Susagna Ricart
DOI:10.1055/s-1989-27168
日期:——
The title compounds 3a-d can be satisfactorily prepared by the reaction of lithium alkoxyacetylides with methyl chloroformate in tetrahydrofuran at - 78°C, in the presence of a 3.5 molar excess of lithium bromide (based on chloroformate). Moderate to good yields of 3a-d were obtained according to the product stabilities. However, methyl tert-butoxyacetylenecarboxylate (3e) was too unstable to be isolated. The putative dual role of the lithium salt and the formation of substantial amounts of carbonates, observed in its absence, are discussed.
A semiempirical (AM1, MNDO, and MINDO/3) study on the thermolysis of 1-alkynyl ethers. Reaction analysis by correlation of localized molecular orbitals
作者:Albert Moyano、Miquel A. Pericas、Felix Serratosa、Eduard Valenti
DOI:10.1021/jo00234a007
日期:1987.12
van Daalen,J.J. et al., Recueil des Travaux Chimiques des Pays-Bas, 1961, vol. 80, p. 810 - 818
作者:van Daalen,J.J. et al.
DOI:——
日期:——
van den Bosch,G. et al., Recueil des Travaux Chimiques des Pays-Bas, 1970, vol. 89, p. 133 - 143