The Experts below are selected from a list of 105 Experts worldwide ranked by ideXlab platform

Weisheng Tian - One of the best experts on this subject based on the ideXlab platform.

Ling Chen - One of the best experts on this subject based on the ideXlab platform.

Gerald Pattenden - One of the best experts on this subject based on the ideXlab platform.

  • indirect support for a stepwise Carbonium Ion pathway operating in 4 3 cycloadditIon reactIons between furanoxonium Ions and 1 3 dienes
    Synlett, 2013
    Co-Authors: Matthew J Palframan, Gerald Pattenden
    Abstract:

    Treatment of solutIons of the furfuryl alcohol 6 in dichloromethane–methanol with buta-1,3-diene or cyclohexa-1,3-diene or with cyclopentadiene in the presence of trifluoroacetic acid leads to the corresponding substituted furyl tetrahydrofurans, 8 , 12 and 15 respectively, rather than to the products 10 , 13 and 16 anticipated from intermolecular (4+3)-type cycloadditIon reactIons. These outcomes provide indirect experimental support for a stepwise Carbonium Ion pathway operating in (4+3)-cycloadditIon reactIons between furanoxonium Ions and 1,3-dienes. Alongside other results, the outcomes also highlight a limitatIon to (4+3) cycloadditIons in cycloheptene ring synthesis when the precursors contain hydroxyl groups capable of intercepting any Carbonium Ion intermediates leading to O-heterocyclic by-products.

Kai Ding - One of the best experts on this subject based on the ideXlab platform.

Matthew J Palframan - One of the best experts on this subject based on the ideXlab platform.

  • indirect support for a stepwise Carbonium Ion pathway operating in 4 3 cycloadditIon reactIons between furanoxonium Ions and 1 3 dienes
    Synlett, 2013
    Co-Authors: Matthew J Palframan, Gerald Pattenden
    Abstract:

    Treatment of solutIons of the furfuryl alcohol 6 in dichloromethane–methanol with buta-1,3-diene or cyclohexa-1,3-diene or with cyclopentadiene in the presence of trifluoroacetic acid leads to the corresponding substituted furyl tetrahydrofurans, 8 , 12 and 15 respectively, rather than to the products 10 , 13 and 16 anticipated from intermolecular (4+3)-type cycloadditIon reactIons. These outcomes provide indirect experimental support for a stepwise Carbonium Ion pathway operating in (4+3)-cycloadditIon reactIons between furanoxonium Ions and 1,3-dienes. Alongside other results, the outcomes also highlight a limitatIon to (4+3) cycloadditIons in cycloheptene ring synthesis when the precursors contain hydroxyl groups capable of intercepting any Carbonium Ion intermediates leading to O-heterocyclic by-products.