1-Acyl-and 1,2-dihydro-1H(acyl)deoxyvasicinones. Synthesis and chemical transformations
作者:Kh. M. Shakhidoyatov、Yasser Barakat、M. G. Levkovich、N. D. Abdullaev
DOI:10.1007/s10600-007-0155-5
日期:2007.7
1-Acyl-and 1,2-dihydro-1H(methyl, acyl)deoxyvasicinones were synthesized. Their PMR and 13C NMR spectra were investigated. The chemical shifts and SSCC were determined. 1-Acyl derivatives were produced by acylation of 1,2-dihydrodeoxyvascinone with caprylyl-and chloroacetylchlorides. It was shown that the Cl atom of 1-chloroacetyldeoxyvasicinone was labile and underwent nucleophilic substitution by amines. In contrast with this, it reacted with cyanide, hydroselenide, methoxide, phenoxide, and anions of compounds with an activated methylene group in a completely different direction to cleave the chloroacetyl group and form 1,2-dihydrodeoxyvasicinone. It was found that addition of 1,2-dihydrodeoxyvasicinone to phenylacetylene occurred regio-and stereoselectively to form the cis-isomer of 1-(2-phenylvinyl)-1,2-dihydrodeoxyvasicinone.
合成了 1-酰基和 1,2-二氢-1H(甲基,酰基)脱氧鸭嘴花碱酮。研究了它们的 PMR 和 13C NMR 光谱。测定了化学位移和 SSCC。1,2-Dihydrodeoxyvascinone 与辛酰氯和氯乙酰氯酰化生成了 1-酰基衍生物。研究表明,1-氯乙酰基脱氧鸭嘴花碱酮的 Cl 原子是易变的,会被胺亲核取代。与此相反,它与氰化物、氢硒化物、甲醇、苯氧化物以及带有活化亚甲基的化合物阴离子的反应方向完全不同,会裂解氯乙酰基,生成 1,2-二氢脱氧鸭嘴花碱酮。研究发现,1,2-二氢脱氧鸭嘴花碱酮与苯乙炔的加成反应具有区域和立体选择性,可生成 1-(2-苯基乙烯基)-1,2-二氢脱氧鸭嘴花碱酮的顺式异构体。