Iron Catalysis for Modular Pyrimidine Synthesis through β-Ammoniation/Cyclization of Saturated Carbonyl Compounds with Amidines
作者:Xue-Qiang Chu、Wen-Bin Cao、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1021/acs.joc.6b02767
日期:2017.1.20
method for the modular synthesis of various pyrimidine derivatives by means of the reactions of ketones, aldehydes, or esters with amidines in the presence of an in situ prepared recyclable iron(II)-complex was developed. This operationally simple reaction proceeded with broad functionalgroup tolerance in a regioselective manner via a remarkable unactivated β-C–H bond functionalization. Control experiments
One-Pot Synthesis of Pyrimidines via Cyclocondensation of β-Bromovinyl Aldehydes with Amidine Hydrochlorides
作者:Shengjiao Yan、Yajuan Tang、Fuchao Yu、Jun Lin
DOI:10.1002/hlca.201000264
日期:2011.3
A series of pyrimidines were prepared by cyclocondensation of β‐bromovinyl aldehydes with amidinehydrochlorides in the presence of Et3N in excellent yields (74–95%).
Construction of a Pyrimidine Framework through [3 + 2 + 1] Annulation of Amidines, Ketones, and <i>N</i>,<i>N</i>-Dimethylaminoethanol as One Carbon Donor
作者:Zemin Qin、Yongmin Ma、Fanzhu Li
DOI:10.1021/acs.joc.1c01847
日期:2021.10.1
synthesis of pyrimidinederivatives has been developed. It involves a [3 + 2 + 1] three-component annulation of amidines, ketones, and one carbon source. N,N-Dimethylaminoethanol is oxidized through C(sp3)–H activation to provide the carbon donor. One C–C and two C–N bonds are formed during the oxidative annulation process. The reaction shows good tolerance to many important functional groups in air, making
Microwave-assisted Pd-catalyzed synthesis of fused steroidal and non-steroidal pyrimidines from β-halo-α,β-unsaturated aldehydes
作者:Junali Gogoi、Pranjal Gogoi、Pranjal Bezbaruah、Romesh C. Boruah
DOI:10.1016/j.tetlet.2013.10.094
日期:2013.12
developed for the synthesis of fused steroidal and non-steroidal pyrimidines from β-halo-α,β-unsaturated aldehydes under microwave irradiation. The β-halo-α,β-unsaturated aldehydes are synthesized from corresponding ketones using Vilsmeier formylation reaction. This synthetic protocol is utilized to synthesize some more novel steroidal pyrimidine derivatives and are currently being evaluated for their biological
A facile synthesis of pyrazolo[1,5-a]pyrimidine and benzimidazo[1,2-a]pyrimidine annulated steroids is described from the novel reaction of β-formyl enamides with amino pyrazoles, indazoles and benzimidazoles. Several of the products exhibited fluorescence properties with high quantum yields.
从β-甲酰胺基与氨基吡唑,吲唑和苯并咪唑的新型反应中,可轻松合成吡唑并[1,5- a ]嘧啶和苯并咪唑并[1,2- a ]嘧啶环化的类固醇。几种产品显示出具有高量子产率的荧光性质。