58881-56-4Relevant articles and documents
Synthesis of Phenanthro[9,10-c]thiophenes by 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-Promoted Cyclo-Oxidation
Gao, Han,Connors, David M.,Goroff, Nancy S.
, p. 630 - 633 (2019/05/21)
A new method to prepare phenanthro[9,10-c]thiophenes has been developed. In the presence of triflic acid, 3,4-diaryl thiophenes undergo 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-promoted cyclo-oxidation. NMR and computational studies indicate that p
Asymmetric synthesis of chiral dihydrothiopyrans via an organocatalytic enantioselective formal thio [3 + 3] cycloaddition reaction with binucleophilic bisketone thioethers
Wang, Shengzheng,Zhang, Yongqiang,Dong, Guoqiang,Wu, Shanchao,Zhu, Shiping,Miao, Zhenyuan,Yao, Jianzhong,Li, Hao,Li, Jian,Zhang, Wannian,Sheng, Chunquan,Wang, Wei
supporting information, p. 5570 - 5573 (2013/11/19)
An unprecedented organocatalytic highly enantioselective approach to a 3,4-dihydro-2H-thiopyran scaffold with two contiguous stereogenic centers has been implemented through a formal thio [3 + 3] cycloaddition process involving a Michael-aldol condensation cascade sequence. Notably, a new class of binucleophilic bisketone thioethers is designed for the process. Furthermore, the fine-tuning of their reactivity enables the cascade process to proceed with highly regioselectively.
Synthesis of oxathiane and morpholine from acyclic precursors: A modified Mitsunobu reaction
Paul, Nidhin,Kaladevi, Selvam,Beneto, Arockiam Jesin,Muthusubramanian, Shanmugam,Bhuvanesh, Nattamai
scheme or table, p. 6892 - 6901 (2012/09/11)
Synthesis of a set of isomeric 2,4,6-triarylmorpholines and 2,6-diaryloxathianes from the corresponding 1,5-diols has been described. The method provides an efficient route to six-membered heterocycles from acyclic diols and is found to be better than Mitsunobu procedure in yield and waste management. In a related study, the ring contraction of pyranone to two isomeric cyclopentenone derivatives through Nazarov reaction has been noticed.