Six new chiral heterocyclic systems have been prepared in which the sulfur, nitrogen, and carbon of the sulfoximide function are part of the ring system (compounds 1-6). From S-methyl-S-phenylsulfoximide (9a), butyllithium, and carbon di... TR Williams,DJ Cram - 《Journal of Organic ...
Ring opening of the diepoxide with sodium azide produced a pair of regioisomeric azido alcohols. Tosylation and treatment with lithium aluminum hydride produced 1. The dibenzoyl derivative possessed the di-exo stereochemistry for the tertiary aziridine nitrogens. The 1H spectrum of 1 was temperature ...
Purification Methods Purification procedures include passage through columns of silica gel (prepared by heating in nitrogen to 350o prior to use) and activated basic alumina, distillation from sodium-potassium alloy, and azeotropic distillation with MeOH, followed by washing out the methanol with water...
The steady-state photolyses of AZc–g in benzene solution were performed with a Xenon lamp (500 W) through a Pyrex filter (hν > 300 nm). The ring-closed compounds CPc–g were quantitatively obtained in the denitrogenation reaction (Scheme 2). The quantum yields of the denitrogenation ...
(ii) phenylalkyl, phenoxyalkyl or phenylthioalkyl of 8 to 11 carbon atoms in the aggregate thereof and wherein the phenyl ring is separated by at least 2 carbon atoms from the nitrogen atom to which R1 is bound and wherein the phenyl ring is unsubstituted, or mono-substituted by, or ...
infrared laser was used to drive the reaction between the nitrogen dioxide and cyclopropane, cyclobutane, and cyclopentane under a variety of reaction ... AE Stanley,JM Bonicamp,SE Godbey,... - Final Technical Report, Jul. 1991 - Sep. 1992 Army Missile Command, Redstone Arsenal, AL. Weapons...
10.21.9.2.3(i) Synthesis of the heterocyclic ring by formation of one bond 10.21.9.2.3(i)(a) A C–N bond The protected aminocyclopentitol is produced on treatment of 157 with sodium hydride by the intramolecular nucleophilic displacement of the bromide in good yield (Equation 57) <2001HCA...
Abstract As a follow-up to our investigation into the influence of H-bond on the C–NO2trigger bond, a comparison of the effect of the H-bond on the ring strain energy with the C–NO2bond dissociation energy was carried out in the HF complex with nitrocyclopropane, nitrocyclobutane, nitr...
Store under Nitrogen. Ambient temperatures. 2.4 Chemical Properties clear colorless to yellow liquid Cyclopentanecarbonyl chloride Preparation Products And Raw materials Raw materials 2.5 Color/Form Clear colorless to yellow 2.6 Water Solubility Reacts with water....
The steady-state photolyses of AZc–g in benzene solution were performed with a Xenon lamp (500 W) through a Pyrex filter (hν > 300 nm). The ring-closed compounds CPc–g were quantitatively obtained in the denitrogenation reaction (Scheme 2). The quantum yields of the denitrogenation ...