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<p>Construction of spiropyrans <em>via</em> [4+2] photocycloaddition reactions and its computational investigation</p>

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Title Statement <p>Construction of spiropyrans <em>via</em> [4+2] photocycloaddition reactions and its computational investigation</p>
 
Added Entry - Uncontrolled Name singh, saurabh ; MDS, university, Ajmer, Rajasthan
Joshi, Rahul ; Department of Chemistry, University of Rajasthan, Jaipur 302 055, India
Pardasani, R T ; School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer 305 801, India
 
Uncontrolled Index Term Chalones, 2-Chloropropene, DFT-B3LYP/6-31-G+ (2d,2p), Heteroary ketones, Thioisatin
 
Summary, etc. <p><strong>Abstract </strong></p> <p>[4+2]-Photochemical cycloaddition provides one of the most efficient and versatile route for the exploring of carbocyclic and heterocyclic frameworks of different sizes with high atom economy. [4+2] photocycloaddition of the chalcones <strong>(2a-h)</strong> obtained by Knoevenagel condensation of thiosatin and different heteroaryl ketones <em>viz.</em> 2-acetyl, 3-acetyl, 4-acetylpyridines and 2-acetylthiophene olefinic 2-chloropropene with as dienophiles led to the construction of six membered novel spiropyran heterocycles (<strong>3a-h</strong>) with 60% yield. The mechanism of the [4+2] photocycloaddition reaction has been investigated in detail by DFT-B3LYP/6-31-G+ (2d, 2p) computational method.<strong></strong></p><br />
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section B (IJC-B)
2020-11-09 10:52:30
 
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http://op.niscair.res.in/index.php/IJCB/article/view/28148
 
Data Source Entry Indian Journal of Chemistry -Section B (IJC-B); ##issue.vol## 59, ##issue.no## 8 (2020): Indian Journal of Chemistry Section - B (IJCB)
 
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