Abstract
Gas-phase pyrolysis of chroman gives o-cresol, benzofuran, and styrene in a 4:2:1 ratio at 413 o C. In the presence of 2-butene, a moderately stereospecific 4+2 reaction occurs with the likely intermediate, o-benzoquinone methide, 1. The addition of 2-butene increased the amount of reaction and decreased the extent of formation of benzofuran and styrene. Addition of hydrogen gas increased the amount of hydrodealkoxylation product, styrene, and gave more of its reduction product, ethylbenzene, at the expense of benzofuran. Only a slight increase in the amount of o-cresol was observed upon addition of hydrogen gas
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.
