Synthesis of C-29-phosphonium derivatives of 3,28-diacetoxylup-20(29)-en-30-oic acid
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DOI: 10.1007/s11172-020-2787-6
Abstract: 3β,28-Diacetoxylup-20(29)-en-30-oic acid (obtained via oxidation of betulin diacetate) enters the addition reaction with P—H-phosphonium salts (triarylphosphonium trifluoroacetates) under mild conditions to afford β-carboxyalkylphosphonium salts. Structure and composition of the resulting compounds were confirmed by NMR… read more here.
Keywords: synthesis phosphonium; phosphonium derivatives; derivatives diacetoxylup; diacetoxylup oic ... See more keywords
Practical synthesis of phosphonium salts with orthoformates and their application as flame retardants in polycarbonate
Sign Up to like & getrecommendations! Published in 2020 at "Tetrahedron"
DOI: 10.1016/j.tet.2020.131107
Abstract: Abstract An efficient and practical approach to phosphonium salts has been developed. By the reaction of phosphines and different acid sources with orthoformates in one-step operation, the process allowed rapid access to phosphonium salts with… read more here.
Keywords: salts orthoformates; flame; phosphonium; practical synthesis ... See more keywords