Ontology highlight
ABSTRACT:
SUBMITTER: Flamme EM
PROVIDER: S-EPMC1399455 | biostudies-literature | 2005 Aug
REPOSITORIES: biostudies-literature
Beilstein journal of organic chemistry 20050826 1
Certain (Z)-1,5-syn-diols 2 may be converted into 2,6-trans-5,6-dihydropyrans by using phosphonium salt 4 or phosphorane 5 as dehydrating agents. A more general four step procedure converts the (Z)-1,5-syn-endiols into enantiomeric dihydropyrans ent-3 via regioselective silylation of the allylic alcohol unit followed by mesylate formation and base-promoted nucleophilic displacement. ...[more]