@article{article, title  = {{Trifluoromethanesulfonic Acid, an Efficient Catalyst for the Hetero Diels-Alder Reaction and an Improved Synthesis of Mefrosol.}},

 publisher = {{Elsevier BV}},

 url = {{}},

 year = {{1997}},

 month = {{4}},

 author = {{Aggarwal VK and Vennall GP and Davey PN and Newman C}},

 doi = {{10.1016/s0040-4039(97)00403-6}},

 volume = {{38}},

 journal = {{Tetrahedron Letters}},

 issue = {{14}},

 pages = {{2569-2572}},

 note = {{Accessed on 2024/09/20}}}