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Chinese Chemical Letters 2011年第7期22卷 771-773页

作者： Bita Mohtat hoorieh Djahaniani Issa Yavari Masomeh G.Dehbalaei Saba A.Jam Department of Chemistry Islamic Azad UniversityKaraj BranchKarajIran Department of Chemistry Islamic Azad UniversityEast Tehran Branch QiamdashtTehranIran Department of Chemistry Islamic Azad UniversityScience and Research BranchTehranIran

The reactive intermediate generated by the addition of alkyl isocyanides to dialkyl acetylenedicarboxylate was trapped by 6- quinolinol to produce highlyfunctionalized 4h-chromenes in fairly good yields.

关键词： 4h-chromene Alkyl isocyanides Acetylenic ester 6-hydroxyquinoline

X-ray Diffraction Investigation of Ethyl 2-(2-Amino-3-ethoxycarbonyl-4h-benzo[f]chromene-4-yl) Cyanoacetate

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Chinese Journal of Structural Chemistry 2010年第3期29卷 432-436页

作者：孙述文周福林董顺福白羽王高峰 College of Pharmacy Jilin Medical College Chemistry Department Yuncheng University

The title compound,ethyl 2-（2-amino-3-ethoxycarbonyl-4h-benzo[f]chromene-4-yl） cyanoacetate 4,has been synthesized and its crystal structure was characterized by X-ray single-crystal *** crystal belongs to monoclinic,space group P21/n with a=12.9408（18）,b=11.1870（13）,c=13.8975（19）,β=109.261（2）°,Z=4,C21h20N2O5,Mr=380.39,V=1899.3（4）3,Dc=1.330 g/cm3,μ=0.096 mm-1,F（000）=800,S=1.027,R=0.0535 and wR=0.1012 for 1365 observed reflections（I 2σ（I））.X-ray analysis reveals N–h…π interactions,π…π interactions and hydrogen bonds in the title molecule.

关键词： N–h…π interactions 4h-chromene crystal structure synthesis

Synthesis of 4h-chromenes by silver(Ⅰ)-catalyzed cycloaddition of ortho-quinone methides with N-allenamides

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Science China Chemistry 2019年第1期62卷 80-86页

作者： Long Kong Nuligonda Thirupathi Jiong Jia Zhenghu Xu Key Laboratory for Colloid and Interface Chemistry of Education Ministry Department of Chemistry Shandong University State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences

chromenes represent an important class of six-membered heterocycles and have drawn tremendous attention in recent years. In this article, we report a convenient and practical synthesis of this heterocycle by a silver(I)-catalyzed cycloaddition reaction between in situ generated ortho-quinone methides and N-allenamides. Diverse 4h-chromenes were synthesized in good to excellent yields under very mild conditions.

关键词： 4h-chromene ortho-quinone methide N-allenamide silver-catalysis cycloaddition

以有序介孔二氧化硅纳米粒子为可再生催化剂多组分一锅法合成4h-氧萘衍生物(英文)

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催化学报 2012年第9期33卷 1486-1494页

作者： Yaghoub SARRAFI Ebrahim MEhRASBI Amir VAhID Mahmood TAJBAKhSh Department of Organic Chemistry Faculty of ChemistryUniversity of Mazandaran

A simple,efficient and environmentally benign protocol for the synthesis of 4h-chromene derivatives was developed using bio-compatible,neutral,and recoverable mesoporous silica nanoparticles as a *** 4h-chromene derivatives were obtained in excellent yields by three component reaction of an aldehyde or isatin,malononitrile,and cyclic 1,3-diketones in ethanol at 60℃.

关键词： green synthesis multicomponent reactions 4h-chromene derivatives mesoporous silica nanoparticles