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.
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.
Methods for the synthesis of highly substituted 2,4-dioxopiperidine libraries
申请人:——
公开号:US20010041345A1
公开(公告)日:2001-11-15
The invention relates to methods of synthesizing libraries of diverse and complex highly substituted 2,4-dioxopiperidine compounds of the general formula:
1
wherein R
1
, R
2
and R
3
are as herein described, novel intermediates useful for synthesizing such 2,4-dioxopiperidine compounds and methods for identifying and isolating the compounds.
本发明涉及通式为 2,4-二氧代哌啶的多种复杂高取代度化合物库的合成方法:
1
其中 R
1
, R
2
和 R
3
如本文所述,用于合成此类 2,4-二氧代哌啶化合物的新型中间体,以及鉴定和分离这些化合物的方法。
Synthesis of 3-methyleneindan-1-ol scaffold from modified Baylis–Hillman adduct: tandem Pd-catalyzed 5-exo-trig cyclization and iodide ion-assisted formal δ-carbon elimination/decarboxylation
作者:Ko Hoon Kim、Hyun Seung Lee、Se Hee Kim、Jae Nyoung Kim
DOI:10.1016/j.tetlet.2011.08.082
日期:2011.10
An efficient synthetic method of 3-methyleneindan-1-ol scaffold was developed from Baylis-Hillman adducts. The reaction involved palladium-catalyzed 5-exo-trig cyclization and iodide ion-assisted formal delta-carbon elimination/decarboxylation process. (C) 2011 Elsevier Ltd. All rights reserved.
Phospha-Michael Addition on α-Fluorinated Acrylates: A Straightforward Access to Polyfunctionalized Fine Chemicals