@article {2507, title = {Regioselective Reduction of 2,4-Diacylpyrroles and the Synthesis of a 2,4-Divinylpyrrole}, journal = {European Journal of Organic Chemistry}, number = {21}, year = {2009}, note = {ISI Document Delivery No.: 478ASTimes Cited: 0Cited Reference Count: 18Lin, Yan Dolphin, David}, month = {Jul}, pages = {3562-3566}, type = {Article}, abstract = {Reduction of 2,4-diacylpyrroles followed by dehydration to prepare the divinylpyrroles has been studied. The N-phenylsulfonyl group exhibited directing ability at the 4-position during the reduction of 2,4-diacylpyrrole and complete regioselectivity was achieved for formations of the 2- and 4-carbinols; several new derivatives, including 2,4-divinylpyrrole, have been prepared. ((C) Wiley-VCH Verlag GmbH \& Co. KGaA, 69451 Weinheim, Germany, 2009)}, keywords = {DERIVATIVES, N Heterocycles, porphyrins, PYRROLES, QUARARIBEA METABOLITES, REDUCTION, regioselectivity, SUBSTITUENTS}, isbn = {1434-193X}, url = {://000268560700010}, author = {Lin, Y. and Dolphin, D.} } @article {1411, title = {Pyrrole synthesis catalyzed by AgOTf or cationic Au(I) complexes}, journal = {Journal of Organic Chemistry}, volume = {71}, number = {12}, year = {2006}, note = {ISI Document Delivery No.: 049PTTimes Cited: 65Cited Reference Count: 71Harrison, Tyler J. Kozak, Jennifer A. Corbella-Pane, Montserrat Dake, Gregory R.}, month = {Jun}, pages = {4525-4529}, type = {Article}, abstract = {Either silver trifluoromethanesulfonate or a mixture of gold( I) chloride, silver trifluoromethanesulfonate, and triphenylphosphine catalyze the formation of pyrroles from substituted beta-alkynyl ketones and amines. The reactions proceed by using 5 mol \% of catalyst with yields of isolated pyrroles ranging from 13\% to 92\%. Sixteen examples are used to compare the effectiveness of each catalyst.}, keywords = {2-PROPYNYL-1, 3-DICARBONYL COMPOUNDS, AMINATION/ANNULATION REACTIONS, C-H BONDS, CARBOXYLIC-ACIDS, DERIVATIVES, EFFICIENT SYNTHESIS, FURANS, ONE-POT, PYRROLES, REGIOSELECTIVE SYNTHESIS, SUBSTITUTED}, isbn = {0022-3263}, url = {://000238029300023}, author = {Harrison, T. J. and Kozak, J. A. and Corbella-Pane, M. and Dake, G. R.} } @article {4304, title = {Oxidation of 2-methylpyrroles with perchlorinated iron(III) metalloporphyrin catalysts: a versatile synthesis of symmetric and asymmetric dipyrromethanes}, journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie}, volume = {76}, number = {10}, year = {1998}, note = {ISI Document Delivery No.: 156LMTimes Cited: 0Cited Reference Count: 22}, month = {Oct}, pages = {1467-1473}, type = {Article}, abstract = {A variety of substituted 2-methylpyrroles (3-8) were oxidized using the metalloporphyrin catalysts iron(III) meso-tetra(2, 6-dichloro-3-sulphonatophenyl)-beta-octachloroporphyrin chloride 1 and iron(III) meso-tetra(2,6-dichlorophenyl)-beta-octachloroporphyrin chloride 2 under very mild conditions. Treatment of the resulting allylic alcohols 3a-8a with alpha-free pyrroles 9 and 10 resulted in a very efficient synthesis of the corresponding dipyrromethanes 3b-8b and 3c-8c. Furthermore, the above allylic alcohols when treated with furfurylamine produced the novel (2-furylmethyl)-2-pyrrolylmethylamines 3d-8d.}, keywords = {catalytic oxidation, dipyrromethanes, EPOXIDATIONS, HYDROXYLATION, iodosylbenzene, METALLOPORPHYRINS, polyhalogenated porphyrins, PYRROLES, TETRAPHENYLPORPHYRINS}, isbn = {0008-4042}, url = {://000078002800017}, author = {Karunaratne, V. and Dolphin, D.} } @article {4121, title = {Photochemistry of 11,12-bis(aminomethyl)-9,10-dihydro-9,10-ethenoanthracene in solution and in the solid state}, journal = {Liebigs Annalen-Recueil}, number = {9}, year = {1997}, note = {ISI Document Delivery No.: XV554Times Cited: 5Cited Reference Count: 19}, month = {Sep}, pages = {1925-1929}, type = {Article}, abstract = {The photochemistry of 11,12-bis(aminomethyl)-9,10-dihydro-9,10-ethenoanthracene (4) was investigated in solution and in the solid state. Direct irradiation of 4 gave the singlet state photoproduct 5, whereas the triplet derived photoproduct could only be obtained by irradiating the bis(hydrochloride) salt of 4 in the presence of xanthen-9-one to give semibull-valene 6-(HCl)(2). Solid state photolysis of 4 resulted in the formation of the pyrrole derivative 7, which is likely due to steric interactions in the solid state.}, keywords = {CRYSTALLINE, cyclizations, ethenoanthracenes, PHOTOCHEMISTRY, PYRROLES, solid-state chemistry}, isbn = {0947-3440}, url = {://A1997XV55400017}, author = {Scheffer, J. R. and Ihmels, H.} }