1H-环丙[b]萘(12)和1H-环丙苯(2)通过环丙芳基阴离子生成和随后的Peterson烯化首次分别转化为1-亚烷基、H-环丙芳烃17-22和27-30。迄今为止,反应序列未能提供母体烃 5 和 6。(二苯基亚甲基)环丙苯 27 的结构已通过 X 射线晶体学方法确定 [C20H,4 的晶体数据:空间群 P 2 , / n , a = 17.579 (5) A, b = 7.909 (3) A, c = 10.298 (4) A, p = 94.06 (2)O, V = 1428.0 A', 1200 次反射 ( I / u ( I ) 3 3.0), 和 R = 0.0491。亚烷基化合物的光谱数据是根据偶极形式 5b 对其结构的贡献来讨论的。近一个世纪以来,紧张的有机分子一直让化学家着迷。由于它们的高能量和相关的应变,这些分子具有不寻常的物理、光谱和化学性质,这些性质具有理论和合成意义,并且具有巨大的吸引力。~
Manganese(III) Acetate-Mediated Cyclization of Diarylmethylenecyclopropa[<i>b</i>]naphthalenes: A Method for the Synthesis of 1,2-Benzanthracene Derivatives
sulfonic acid provides an efficient method for the synthesis of 1,2-benzanthracenes in moderate to good yields under mild conditions. In addition, after several steps of simple and routine operations, the obtained 1,2-benzanthracenes bearing an acetoxy group could be easily converted to structurally more sophisticated 1,2-benzanthracenederivatives, which are not easily accessible yet potentially useful
乙酸锰(III)介导的二芳基亚甲基环丙烷[ b ]萘与亲核试剂(如羧酸和磺酸)的自由基环化为在温和条件下以中等至良好收率合成1,2-苯并蒽提供了一种有效的方法。此外,经过几步简单且常规的操作后,获得的带有乙酰氧基的1,2-苯并蒽可以容易地转化为结构更复杂的1,2-苯并蒽衍生物,这些衍生物不易获得,但对材料科学而言可能是有用的候选物。 。
Synthetic protocols, molecular polarity, and 13C NMR correlations for 1-aryl- and 1-diarylmethylidene-1H-cyclopropa[b]naphthalenes
作者:Brian Halton、Gareth M. Dixon
DOI:10.1039/b411714j
日期:——
The Peterson olefination for alkylidenecycloproparene synthesis from a 1,1-disilylcycloproparene has been refined into five distinct protocols that have provided 43 new aryl- (5 and 6) and diaryl- (7 and 8), and aryl(phenyl)- (9 and 10) methylidene derivatives. The permanent dipole moments of these and other previously reported compounds have been measured and the direction of the dipole, to or from
Palladium-Catalyzed [3+2] Cycloaddition Reaction of (Diarylmethylene)cyclopropa[b]naphthalenes with Arynes: An Efficient Synthesis of 11-(Diarylmethylene)-11H-benzo[b]fluorenes
作者:Ying Lin、Luling Wu、Xian Huang
DOI:10.1002/ejoc.201100035
日期:2011.6
A Pd-catalyzed [3+2] cycloaddition reaction of (diarylmethylene)cyclopropa[b]naphthalenes with arynes provided an efficient approach for the synthesis of 11-(diarylmethylene)-11H-benzo[b]fluorenes with good to excellent yields under mild conditions.
Nickel-catalyzed manipulation of tertiary phosphines via highly selective C–P bond cleavage
作者:Jian Cao、Xian Huang、Luling Wu
DOI:10.1039/c3cc43640c
日期:——
A catalytic cycle involving oxidative addition of nickel(0) with a carbonâcarbon single bond in the three-membered ring of diarylmethylenecyclopropa[b]naphthalenes, highly selective cleavage of the CâP bond, and migration of the aryl group of phosphine consequently provides a new type of bulky phosphine in excellent yields.