Computed Properties of C12H10S2In 2020 ,《Metal-free regioselective C-H chalcogenylation of coumarins/(hetero)arenes at ambient temperature》 was published in Chemical Communications (Cambridge, United Kingdom). The article was written by Song, Zengqiang; Ding, Chaochao; Wang, Shaoli; Dai, Qian; Sheng, Yaoguang; Zheng, Zhilong; Liang, Guang. The article contains the following contents:
A novel, practical and metal-free approach for the regioselective selenation of coumarins I [R = H, OMe; R1 = Me, Ph, Br, etc.; R2 = H, Me, OMe, Cl, OAc; R3 = Me, F, Cl, etc.; R4 = H, Me; R2R3 = CH=CH-CH=CH, -(CH2)4-] employing (bis(trifluoroacetoxy)iodo)benzene (PIFA) at room temperature is presented. The developed method is suitable for a wide substrate scope and affords 3-selenyl coumarins II (R5 = Et, Ph, 2-methoxypyridin-3-yl, etc.) in good to excellent yields with high selectivity. A radical mechanism is proposed for this new transformation. Furthermore, the application of sulfenylation with coumarines I and selenation with other (hetero)arenes e.g.,1H-indazole in this transformation is successful. The results came from multiple reactions, including the reaction of 1,2-Diphenyldisulfane(cas: 882-33-7Computed Properties of C12H10S2)
1,2-Diphenyldisulfane(cas: 882-33-7) belongs to ethers.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. Computed Properties of C12H10S2 They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem