104351-17-9

Upstream product

• 104351-33-9 3,3-Dimethyl-N-p-tolyl-butyrimidoyl chloride 
• 586-96-9 Nitrosobenzene 
• 72624-86-3 (3,3-Dimethyl-but-1-enylidene)-p-tolyl-amine 

Relevant academic research and scientific papers

Cycloaddition of N-Aryl-tert-butylketenimines to Both Nitrosobenzene and 2-Methyl-2-nitrosopropane

Reactions of the ketenimines 1a, b with nitrosobenzene (2a) do not give the appropriate 1,2-oxazetidines such as 3Aa,b, but produce small amounts of the benzoxazoles 4a, b and the 1,4-benzoxazines 5Aa, b.However, from 1a-c and the nitrosoalkane 2b the analogous compounds 5Ba-c and/or 3Ba-c are formed (depending on conditions); mixtures of 1d-f and 2b afford 3Bd-f only.The heterocycles 4 and 5 are believed to arise through the intermediary cycloadduct 14/14'.