Über die Umsetzung von Diacidylhydrazidchloriden mit Stickstoffnatrium

Abstract

I) 0. K r a m e r , Uber die Umsetzung von p-Tolylal-p-tolylhydrazidchlorid und Di-p-tolylhydrazidchlorid mit Natriumazid, 1naug.-Diss. Heidelberg, 1923. ¶) E. S c h i c k , Uber die Umsetzung von o-Chlorbeneal-o-chlorbenzhydrazidchlorid und Diochlorbenzhydrazidchlorid mit Natriumazid, 1naug.-Diss. Heidelberg, 1925. , ) H. E r b e , Uber die Umsetzung von Nitrobenzhydrazidchloriden

Nucleophile-Induced Intramolecular Dipole 1,5-Transfer and 1,6-Cyclization: Experimental and ab Initio Studies of Formation, Thermolysis, and Molecular and Electronic Structures of 3,6-Diphenyl-1-propanesulfenimido-1,2,4,5-tetrazine

“…The initial reaction of the dichloride 2 with sodium azide is well documented in the literature and yields mono-( 9-Z,Z ) and di-imidoyl azides at ambient temperature. − At higher temperatures, however, the imidoyl nitrogen atom undergoes isomerization to the E-isomer 9-E,Z , which quickly cyclizes to tetrazole 10 (Scheme ). The rate of the Z−E isomerization has been determined for similar compounds to be about 10 -5 s -1 at 70 °C with an activation energy of about 25 kcal/mol…”