Showing papers on "Intramolecular reaction published in 1967"

Reactions of cyclic alkyl radicals. Part 2.—Photolysis of cyclopropane carboxaldehyde

Abstract: The vapour-phase photolysis of cyclopropane carboxaldehyde has been studied at various pressures over the temperature range 40–250°C. A major primary process is the intramolecular reaction yielding propylene and carbon monoxide. Cyclopropyl radicals are also produced and isomerize to allyl radicals with an estimated activation energy of about 22 kcal mole–1. A value of 2 has been obtained for the cross-combination ratio for allyl and cyclopropyl radicals.

Recherches sur la formation et la transformation des esters LXXV[1]. Amines, amino-alcools et aminoalcoyl-monoesters des acides orthophosphorique et sulfurique: thiocarbamylation par l'isothiocyanate d'o-méthoxycarbonylphényle sans ou avec cyclisation intramoléculaire

Abstract: o-Methoxycarbonyl-phenylisothiocyanate V and primary alkylamines (R″NH2) reacted in the appropriate medium yield the corresponding 2-mercapto-3-alkyl-3, 4-dihydro-quinazolinone-4 derivatives VI (the NH2 group is thiocarbamoylated by the NCS group and then acylated in an intramolecular reaction by the COOCH3 group with elimination of CH3OH).