Some unexpected products from the treatment of organoboranes from α,β-unsaturated ketones with acetic acid–acetic anhydride
作者:K. Bailey、T. G. Halsall
DOI:10.1039/j39680000679
日期:——
5β-triacetoxy-10β-methyl-trans-decalin was obtained although no specific oxidising agent was used. Under similar conditions 10-methyl-Δ1(9)-octalin-2-one and cholest-4-en-3-one also afforded oxidation products, viz. 1α,2β-diacetoxy-10β-methyl-trans-decalin (26% yield) and 3β,4α-diacetoxy-5α-cholestane (19% yield). No evidence has yet been obtained concerning the mechanism whereby the organoboranes are oxidised
1β乙酰氧基9β甲基Δ的合成5 -反式从-octalin 9-甲基Δ -5(10) -octalin -1,6-二酮已用大量过量的锂的情况下进行通过处理二酮的在乙醚中加入氢化铝,然后在乙醚中加入三氟化硼,然后将生成的有机硼烷与乙酸-乙酸酐加热。产率低(16%)。出乎意料的是,尽管未使用特定的氧化剂,但获得了少量的1α,2β,5β-三乙酰氧基-10β-甲基-反式-萘烷。在相似条件下,10-甲基-Δ1 (9)-辛二-2-酮和胆甾-4-烯-3-酮也提供氧化产物,即。1α,2β-二乙酰氧基-10β-甲基-反式-十氢化萘(26%收率)和3β,4α-二乙酰氧基-5α-胆甾烷(19%收率)。尚未获得有关有机硼烷被氧化的机理的证据。