One-pot conversion of alkyl aldehydes into substituted propanoic acids via Knoevenagel condensation with Meldrum’s acid
摘要:
Reaction of a range of alkyl aldehydes and Meldrum's acid in triethylammonium formate (TEAF) at 100 degrees C generates substituted propanoic acids in a single step. (C) 2010 Elsevier Ltd. All rights reserved.
A fused heterocycle derivative represented by the general formula (I):
(wherein R
1
represents optionally substituted lower alkyl, or the like; R
2
represents an optionally substituted aliphatic heterocyclic group, or the like; R
3
represents —C(=Z)NR
5
R
6
(wherein R
5
and R
6
represent optionally substituted lower alkyl, or the like, and Z represents an oxygen atom or the like), or the like; n represents an integer of 1 to 3; and W represents C—R
5
(wherein R
5
represents a hydrogen atom or the like)) or a pharmaceutically acceptable salt thereof, and the like are provided.
A fused heterocycle derivative represented by the general formula (I):
(wherein R1 represents optionally substituted lower alkyl, or the like; R2 represents an optionally substituted aliphatic heterocyclic group, or the like; R3 represents -C(=Z)NR5R6 (wherein R5 and R6 represent optionally substituted lower alkyl, or the like, and Z represents an oxygen atom or the like), or the like; n represents an integer of 1 to 3; and W represents C-R5 (wherein R5 represents a hydrogen atom or the like)) or a pharmaceutically acceptable salt thereof, and the like are provided.
TETRAHYDROPYRANYLNIEDERALKYLESTER UND DEREN HERSTELLUNG MITTELS EINER KETENVERBINDUNG
申请人:BASF SE
公开号:EP3464258A1
公开(公告)日:2019-04-10
US8236841B2
申请人:——
公开号:US8236841B2
公开(公告)日:2012-08-07
[DE] TETRAHYDROPYRANYLNIEDERALKYLESTER UND DEREN HERSTELLUNG MITTELS EINER KETENVERBINDUNG<br/>[EN] TETRAHYDROPYRANYL LOWER ALKYL ESTERS AND THE PRODUCTION OF SAME USING A KETENE COMPOUND<br/>[FR] ESTERS D'ALKYLE INFÉRIEURS DE TÉTRAHYDROPYRANYLE ET LEUR PRODUCTION AU MOYEN D'UNE LIAISON CÉTÈNE
申请人:BASF SE
公开号:WO2017207539A1
公开(公告)日:2017-12-07
Die vorliegende Erfindung betrifft Tetrahydropyranylniederalkylester und speziell Tetrahydropyranylacetate, ein Verfahren zu deren Herstellung unter Verwendung von Keten und deren Verwendung als Riech- und Aromastoffe.