Heterocycles Starting from Bis(alkoxycarbonyl)ketene Ethylene Acetals (=Dialkyl 2-(1,3-Dioxolan-2-ylidene)propane-1,3-dioate). Synthesis and Properties of a New Class of Pyrazolium Betaines

DOI: 10.1002/hlca.19920750407

Source and publish data:

Helvetica Chimica Acta p. 1039 - 1051 (1992)

Update date:2022-07-30

Topics:

Authors:

Neidlein, Richard

Schroeder, Guenter

Krieger, Claus

Kikelj, Danijel

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1002/hlca.19920750407

The readily available bis(alkoxycarbonyl)ketene ethylene acetals 1 react with bifunctional nucleophiles to give heterocycles 2-5 (Scheme 1).Their reactions with N,N-dialkylhydrazines lead to the pyrazolium betaines 7a-f (Scheme 4).Cyclic N,N-dialkylhydraz

Full text of DOI:10.1002/hlca.19920750407

Products guided by the article

Product name:methyl 4-(2-hydroxyethoxy)-6-oxo-2-phenyl-1H-pyrimidin-5-carboxylat

Cas No:143520-99-4

R&D Labs maybe for 143520-99-4

Hebei Kangtai Pharmaceutical Co.,Ltd

Contact:+86-0317-3512963

Address:Wugang Road,Mengcun of Cangzhou City,Hebei Province ,China
Shandong Jincheng Zhonghua Bio-pharmaceutical Co.,Ltd

Contact:+86-533-5415882

Address:Zichuan Economic Development Zone,Zibo City,Shandong Province,China
Zhejiang Rongkai Chemical Technology Co.,Ltd.

Contact:+86-578-8185786

Address:Shangjiang Industrial Zone,Suichang
HOST COUNTRY LIMITED

Contact:+852 83038667

Address:Room 1502, 15th Floor, SPA Centre,53-55 Lockhart Road, Wanchai, Hong Kong
Anhui Sholon New Material Technology Co., Ltd.

website:http://www.sholonchem.com

Contact:+86-550-5261666

Address:4/F Block B, Beijing Chemical Building.No.520 Tianrun Road ,Science & Education Town Wujin District, Changzhou City Jiangsu Province

Relevant to this article

Generation of rhodium(I) carbenes from ynamides and their reactions with alkynes and alkenes

Doi:10.1021/ja4047069
(2013)
Syntheses of (+)-complanadine A and lycodine derivatives by regioselective [2 + 2 + 2] cycloadditions

Doi:10.1021/jo400695c
(2013)
Cleavable trifunctional biotin reagents for protein labelling, capture and release

Doi:10.1039/c3cc42076k
(2013)
Chiral synthesis of both enantiomers of 1,4-dideoxy-1,4-iminolyxitol and 1,4-dideoxy-1,4-iminoribitol

Doi:10.1016/S0957-4166(00)80499-1
(1992)
Route to pyrazolo[5,1-a]isoquinolines via a copper-catalyzed tandem reaction of 2-alkynylbromobenzene with pyrazole

Doi:10.1021/jo400523v
(2013)
A new synthesis of fullerenyl ketones catalyzed by Ti(Oi-Pr)₄

Doi:10.1016/j.tetlet.2013.04.034
(2013)

Article Doi