Abstract
Reactions of 4-(N-phenylsulfonyl)-2-alkoxy-1,4-benzoquinone monoimines with electron-rich propenylbenzenes promoted by BF 3 yield 7-alkoxy-2-aryl-3-methyl-5-(N-phenylsulfonyl)amino-2,3-dihydrobenzofurans nearly exclusively; whereas, promotion of the reactions by >2 equiv of Ti(IV) gives mainly N-phenylsulfonyl-6-alkoxy-2-aryl-5-hydroxy-3-methyl-2,3-dihydoindoles.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
