2288-18-8Relevant articles and documents
Yu, Fei-Le,Bai, Da-Chang,Liu, Xiu-Yan,Jiang, Yang-Jie,Ding, Chang-Hua,Hou, Xue-Long
, p. 3317 - 3321 (2018)
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Grummit,Leaver
, p. 1595 (1952)
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A Cascade Suzuki-Miyaura/Diels-Alder Protocol: Exploring the Bifunctional Utility of Vinyl Bpin
Cain, David L.,McLaughlin, Calum,Molloy, John J.,Carpenter-Warren, Cameron,Anderson, Niall A.,Watson, Allan J. B.
, p. 787 - 791 (2019/04/25)
Cascade reactions are an important strategy in reaction design, allowing streamlining of chemical synthesis. Here we report a cascade Suzuki-Miyaura/Diels-Alder reaction, employing vinyl Bpin as a bifunctional reagent in two distinct roles: as an organoboron nucleo phile for cross-coupling and as a Diels-Alder dienophile. Merging these two reactions enables a rapid and operationally simple synthesis of functionalized carbocycles in good yield. The effect of the organoboron subtype on Diels-Alder regioselectivity was investigated and postsynthetic modifications were carried out on a model substrate. The potential for a complementary Heck/Diels-Alder process was also assessed.
Efficient Synthesis of 3,6-Dihydro-2H-pyrans via [3+2+1] Annulation Based on the Heteroatom-free Tri-atom Donor
Li, Hui,Liu, Haiping,Liu, Yufeng,Cao, Zhongzhong,Su, Miaodong,Fu, Meiqiang,Luo, Weiping,Liu, Qiang,Guo, Cancheng
, p. 5392 - 5399 (2019/11/11)
A new [3+2+1] annulation strategy based on the heteroatom-free tri-atom donor to synthesize 3,6-dihydro-2H-pyrans has been developed. In this method, 2-arylpropylene served as tri-atom donor to contribute three carbon atoms, the heteroatom was provided by aldehyde, and DMSO served as one carbon donor and solvent. This annulation reaction gave 3,6-dihydro-2H-pyrans in moderate to good yields. Based on the control experiments, a possible mechanism was proposed. (Figure presented.).