37868-74-9Relevant articles and documents
X-RAY STRUCTURE OF A CHIRAL ALKENE: DIRECT EVIDENCE FOR C-H BOND ECLIPSING C=C BOND
Gung, Benjamin W.,Karipides, Anastas,Wolf, Mark A.
, p. 713 - 716 (1992)
A single crystal X-ray structure determination of the chiral alkene, (1Z)-1-(benzyloxymethyloxy)-3-cyclohexyl-4-phenyl-1-buten-4-ol, (1), is described.The observed conformation about the Csp2-Csp3 bond of 1 is the C-H eclipsed form in the crystal and in solution.The observed torsional angles in the acetal portion of the structure are -65 deg for R'-O-C-O and -59 deg for O-C-O-R''.
Sulfur-controlled and rhodium-catalyzed formal (3 + 3) transannulation of thioacyl carbenes with alk-2-enals and mechanistic insights
Wu, Qiuyue,Dong, Ziyang,Xu, Jiaxi,Yang, Zhanhui
supporting information, p. 3173 - 3180 (2021/04/21)
A rhodium-catalyzed denitrogenative formal (3 + 3) transannulation of 1,2,3-thiadiazoles with alk-2-enals is achieved, producing 2,3-dihydrothiopyran-4-ones in moderate to excellent yields. An inverse KIE of 0.49 is obtained, suggesting the reversibility of the oxidative addition of thioacyl Rh(i) carbenes to alk-2-enals. The late-stage structural modifications of steroid compounds are realized. Moreover, our studies show that thioacyl carbenes have different reactivities to those of α-oxo and α-imino carbenes, and highlight the importance of heteroatoms in deciding the reactivities of heterovinyl carbenes.
Palladium-catalysed regio- And stereoselective arylative substitution of γ,δ-epoxy-α,β-unsaturated esters and amides by sodium tetraaryl borates
Artok, Levent,Bilgi, Yasemin,Ku?, Melih
, p. 6378 - 6383 (2020/09/07)
Palladium-catalysed reactions of γ,δ-epoxy-α,β-unsaturated esters and amides with NaBAr4 reagents proceeded regio- and stereoselectively, producing allylic homoallyl alcohols with aryl-substituents in the allylic position for a wide range of substrates. A