53675-97-1Relevant academic research and scientific papers
FORMATION OF UNUSUAL PYRROLES BY PHOTOLYSIS OF 1-VINYL-4,5-DIHYDRO-1H-1,2,3-TRIAZOLES
Ito, Masato M.,Nomura, Yujiro,Takeuchi, Yoshito,Tomoda, Shuji
, p. 1519 - 1522 (1981)
Photolysis of 4-alkyl-5-amino-1-vinyl-4,5-dihydro-1H-1,2,3-triazoles gave not 3-alkylpyrroles but unexpected 2-alkylpyrroles in 80-83 percent yields.Similarly, 4,4-dimethyltriazole derivatives gave 2,2-dimethyl-2H-pyrroles in 70-74 percent yields. 1-Vinylaziridines were assumed as a possible intermediate of this anomalous reaction.
Nitrones and Oxaziridines. XXXIX Conversion of 1-Pyrroline 1-Oxides into 2H-Pyrroles through the Hetero-Cope Rearrangement
Black, David, St.C.,Strauch, Richard J.
, p. 71 - 78 (2007/10/02)
The 1-pyrroline 1-oxides (1) undergo a hetero-Cope rearrangement to give variously the 2H-pyrroles (2) and/or the 3-benzoyloxy-1-pyrrolines (3).The esters (3) can be hydrolysed to the corresponding alcohols (4).
REACTION OF CHLOROSULFONYL ISOCYANATE WITH NITRONES: AN EFFICIENT METHOD FOR THE SYNTHESIS OF CYCLIC ENAMIDES AND 2H-PYRROLES
Joseph, Sajan P.,Dhar, D. N.
, p. 5209 - 5214 (2007/10/02)
Reaction of chlorosulfonyl isocyanate (CSI) with nitrones (derived from cyclic conjugated ketones), 1-7 and 3,4-dihydro-2H-pyrrole-1-oxides, 15a-f, has been studied.Nitrones, 1-7, react with CSI to form the enamides, 8, 10-14, and the cyclic amide, 9, in
CONVERSION OF 3,4-DIHYDRO-2H-PYRROLE-1-OXIDE TO 2H-PYRROLE USING CHLOROSULFONYL ISOCYANATE
Joseph, Sajan P.,Dhar, D. N.
, p. 1743 - 1748 (2007/10/02)
3,4-Dihydro-2H-pyrrole-1-oxides 1a-e react with Chlorosulfonyl isocyanate (CSI), to give the 2H-pyrroles 2a-e. 3,4-Dihydro-2,2,4,4-tetramethyl-2H-pyrrole-1-oxide 1f on treatment with CSI furnished 3,3,5,5-tetramethyl pyrrolidin-2-one.
Photochemical Nitrogen Extrusion of 5-Amino-1-vinyl-4,5-dihydro-1H-1,2,3-triazoles. Formation of Unusual Pyrroles
Ito, Masato M.,Nomura, Yujiro,Takeuchi, Yoshito,Tomoda, Shuji
, p. 533 - 536 (2007/10/02)
Photolysis of 4-alkyl-5-amino-1-vinyl-4,5-dihydro-1H-1,2,3-triazoles gave not 3-alkylpyrroles, but unexpected 2-alkylpyrroles in 80-83percent yields. 1-Vinylaziridines were assumed as a possible intermediate of this unusual pyrrole formation.In the photol
5-Amino-1-vinyl-4,5-dihydro-1H-1,2,3-triazoles as a Source of 1-Amino-2-aza-1,3-butadiene
Nomura, Yujiro,Takeuchi, Yoshito,Tomoda, Shuji,Ito, Masato M.
, p. 2779 - 2785 (2007/10/02)
Thermolysis of 4,4-dimethyl-1-(1-phenylvinyl)-5-(1-pyrrolidinyl)-4,5-dihydro-1H-1,2,3-triazole gave 2-methyl-N-(1-phenylvinyl)-1-(1-pyrrolidinyl)-1-propanimine, which reacted as a 2-azabutadiene with electrondeficient dienophiles to afford the corresponding cycloadducts.Reactivity and regioselectivity of the cycloaddition reactions were rationalized with the frontier molecular orbital treatment.
