70200-84-9Relevant academic research and scientific papers
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 (1988)
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
Synthesis of 2H-pyrroles by treatment of pyrrolidines with DDQ
Cheruku, Srinivasa R.,Padmanilayam, Maniyan P.,Vennerstrom, Jonathan L.
, p. 3701 - 3703 (2007/10/03)
A mild and efficient synthesis of 2,2-dialkyl-3,5-diaryl-2H-pyrroles is described. Treatment of 2,2-dialkyl-3,5-diarylpyrrolidines with DDQ in dioxane for 12-24 h at rt afforded the corresponding 2H-pyrroles in 55-81% overall yields.
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.
