Details

Autor(en) / Beteiligte

• Liu, Yu
• Wang, Qiao-Lin
• Chen, Zan
• Zhou, Quan
• Xiong, Bi-Quan
• Zhang, Pan-Liang
• Tang, Ke-Wen

Titel

Visible-light promoted one-pot synthesis of sulfonated spiro[4,5]trienones from propiolamides, anilines and sulfur dioxide under transition metal-free conditions

Ist Teil von

• Chemical communications (Cambridge, England), 2019-10, Vol.55 (81), p.12212-12215

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A novel visible-light promoted sulfonylation/ ipso -cyclization of N -arylpropiolamides with arylamines and DABCO·(SO 2 ) 2 to synthesize various sulfonated spiro[4,5]trienones is reported. This sulfonylation/ ipso -cyclization reaction proceeds via a radical process and undergoes arylsulfonyl radical formation, sulfonylation, and ipso -cyclization. The experimental results indicate that H 2 O provides an oxygen atom for the construction of the carbonyl group. A novel visible-light promoted sulfonylation/ ipso -cyclization of N -arylpropiolamides with aromatic amines and DABCO·(SO 2 ) 2 to synthesize various sulfonated spiro[4,5]trienones is reported.