Boron Trifluoride?Diethyl Ether-Catalyzed Etherification of Alcohols: A Metal-Free Pathway to Diphenylmethyl Ethers
A novel boron trifluoride?diethyl ether (BF3?OEt2)-catalyzed etherification procedure has been developed in which primary and secondary alcohols are easily converted into diphenylmethyl ethers with yields of up to 99%.
Enantioselective allyltitanations. Synthesis of optically active 1,2- diol units: Useful intermediates for the preparation of biologically active compounds
1,2-Diol units were synthesized with excellent enantiomeric excess by using an enantioselective allyltitanation of α-alkoxy-substituted aldehydes.
Cossy, Janine,Bouzbouz, Samir,Caille, Jean Claude
p. 3859 - 3862
(2007/10/03)
Cerium(IV), as a selective and efficient catalyst for alcoholyses of allylic and tertiary benzylic alcohols
An efficient and selective method is described for the catalytic conversion of allylic, and tertiary benzylic alcohols into their corresponding ethers in the presence of Ce(IV) under solvolytic and non- solvolytic conditions.
Iranpoor, Nasser,Mothaghineghad, Enayatholah
p. 1859 - 1870
(2007/10/02)
Regioselective N- or O-Tritylation of 2(1H)-Pyridone - (Triphenylmethyl)pyridones as Tritylation Agents
Tritylation of 2(1H)-pyridone (1) with triphenylmethyl chloride (4) in acetonitrile leads exclusively to N-trityl-2(1H)-pyridone (3a) via the lithium salt 1', whereas 2-pyridyl trityl ether (3b) is the only product from the reaction with the sodium salt 1
Effenberger, Franz,Brodt, Werner,Zinczuk, Juan
p. 3011 - 3026
(2007/10/02)
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