Kondrat’eva, G. Ya.’s team published research in Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya in | CAS: 20662-83-3

Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya published new progress about 20662-83-3. 20662-83-3 belongs to oxazolidine, auxiliary class Oxazole, name is 4,5-Dimethyloxazole, and the molecular formula is C5H7NO, Safety of 4,5-Dimethyloxazole.

Kondrat’eva, G. Ya. published the artcileReaction of oxazoles with dienophiles of methylenemalonic ester type, Safety of 4,5-Dimethyloxazole, the publication is Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya (1972), 2125-6, database is CAplus.

Oxazoles (I) reacted with dienophiles e.g. CH:C-(CO2Et)2 (II) by 1,4-cycloaddition to give 25-40 adduct (III, R1 = PrO, BuO, Me; R2 = H, Me; R3 = CO2Et, Ac). All the dienophiles tried reacted with I (R1 = alkoxy), but I (R1 = Me) reacted with II only. I (R = PrO) and piperidinylcyclo-pentene reacted similarly to give 26 1:1 adduct. II were stable in storage or when heated to 200°.

Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya published new progress about 20662-83-3. 20662-83-3 belongs to oxazolidine, auxiliary class Oxazole, name is 4,5-Dimethyloxazole, and the molecular formula is C5H7NO, Safety of 4,5-Dimethyloxazole.

Referemce:
https://en.wikipedia.org/wiki/Oxazolidine,
Oxazolidine | C3H7NO – PubChem