The Baylis–Hillman chemistry in aqueous media: a convenient synthesis of 2-methylenealkanoates and alkanenitriles
摘要:
A convenient, general and efficient synthesis of 2-methylenealkanoates and alkanenitriles is accomplished via the regioselective nucleophilic (S(N)2') addition of hydride ion from NaBH4 to (2Z)-2-(bromomethyl)alk-2-enoates and 2-(bromomethyl)alk-2-enenitriles respectively in the presence of DABCO in environment friendly aqueous media. Synthesis of two hypoglycemic agents is also described. (C) 2001 Elsevier Science Ltd. All rights reserved.
Montmorillonite clay-catalyzed stereoselective syntheses of aryl-substituted (E)- and (Z)-allyl iodides and bromides
作者:Jhillu S. Yadav、Basi V. Subba Reddy、Chinnala Madan
DOI:10.1039/b103850h
日期:——
An efficient and rapid procedure for the synthesis of allyl iodides and bromides from Baylis–Hillman adducts using clay-supported sodium iodide and sodium bromide is described. Improved yields and enhanced rates have been achieved by employing microwave irradiation.
Mild and practical stereoselective synthesis of (Z)- and (E)-allyl bromides from Baylis–Hillman adducts using Appel agents (PPh3/CBr4): a facile synthesis of semiplenamides C and E
Appel agents (PPh3/CBr4) have been utilized for high-yielding stereoselective synthesis of (Z)- and (E)-allyl bromides from Baylis–Hillman adducts at room temperature. The method has been applied for the synthesis of naturallyoccurring bioactive fatty acid amides, semiplenamides C and E.
FACILE STEREOSELECTIVE SYNTHESIS OF (<i>E</i>)- AND (<i>Z</i>)-ALLYL BROMIDES FROM THE BAYLIS-HILLMAN ADDUCTS USING MgBr<sub>2</sub>
作者:Subramanian Ravichandran
DOI:10.1081/scc-100104426
日期:2001.1
A simple and convenient synthesis of the title compounds is described.
Regioselective Synthesis of Fluorenones via the Consecutive In-Mediated Barbier Reaction, Pd-Catalyzed Cyclization, and Friedel-Crafts Reaction Starting from Baylis-Hillman Adducts
作者:Ko-Hoon Kim、Sung-Hwan Kim、Ka-Young Lee、Jae-Nyoung Kim