Reactions of 2,3,5-trichloro-4,4-ethylenedioxy-2-cyclopentenone with some ambident nucleophiles. Sterically loaded functionalized 6-azabicyclo[3.1.0]hex-5-enes
作者:G. A. Shavaleeva、N. A. Ivanova、F. G. Usmanova、R. R. Akhmetvaleev、M. S. Miftakhov
DOI:10.1007/s11178-005-0054-9
日期:2004.10
2,3,5-Trichloro-4,4-ethylenedioxy-2-cyclopentenone reacted with sodium azide in tetrahydrofuran to give the expected 3-azido derivative which was converted into 1,3-dichloro-4,4-ethylenedioxy-6-azabicyclo-[3.1.0]hex-5-en-2-one and 3-amino-2,5-dichloro-4,4-ethylenedioxy-2-cyclopentenone on heating in chloroform. The reaction of 2,3,5-trichloro-4,4-ethylenedioxy-2-cyclopentenone with potassium thiocyanate, depending on the conditions, afforded the corresponding 3-thiocyanato derivative or symmetric sulfide. Treatment of the title compound with hydroxylamine resulted in opening of the dioxolane ring with simultaneous formation of oxime via replacement of chlorine at the neighboring sp 2-carbon atom.
2,3,5-三氯-4,4-乙二氧基-2-环戊烯酮与四氢呋喃中的叠氮化钠反应,得到预期的3-叠氮衍生物,该衍生物在氯仿中加热后转化为1,3-二氯-4,4-乙二氧基-6-氮杂双环-[3.1.0]己-5-烯-2-酮和3-氨基-2,5-二氯-4,4-乙二氧基-2-环戊烯酮。2,3,5-三氯-4,4-乙二氧基-2-环戊烯酮与硫氰酸钾的反应,根据条件不同,得到相应的3-硫氰酸酯衍生物或对称硫化物。用羟胺处理标题化合物,导致二氧戊环环打开,同时通过取代相邻sp2碳原子的氯形成肟。