Abstract
AbstractA radical di‐ and trichloromethylation/cyclization of unactivated alkenes was developed with commercially available dichloromethane and chloroform as di‐and trichloromethyl radical sources under metal‐free conditions. Variously substituted di‐ and trichloromethylated pyrrolo‐ and piperidino‐quinazolinones were obtained in 47–94% yields. Additionally, dibromomethylation/cyclization was also achieved under standard conditions when CH2Br2 was utilized. Moreover, the obtained dichloromethylated product can be transformed into 1′H‐spiro[cyclopropane‐1,3′‐pyrrolo[2,1‐b]quinazolin]‐9′(2′H)‐one after treating by KOH.magnified image
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