Generation and Reactions of Pentacyclo[4.3.0.0<sup>2,4</sup>.0<sup>3,8</sup>.0<sup>5,7</sup>]non-4-ene
作者:Mark A. Forman、Caitlin Moran、Joseph P. Herres、Jason Stairs、Emily Chopko、Anthony Pozzessere、Michael Kerrigan、Carisa Kelly、Lisa Lowchyj、Kerry Salandria、Annemarie Gallo、Elizabeth Loutzenhiser
DOI:10.1021/jo0626313
日期:2007.4.1
The highly pyramidalized alkene, pentacyclo[4.3.0.02,4.03,8.05,7]non-4-ene (9), has been generated via treatment of 4,5-diiodopentacyclo[4.3.0.02,4.03,8.05,7]nonane (12) with n-butyllithium and tert-butyllithium. The title alkene has also been trapped as its Diels−Alder adduct with 1,3-diphenylisobenzofuran, 2,5-dimethylfuran, and spiro[2.4]hepta-4,6-diene. Products resulting from alkyllithium addition
高度pyramidalized烯烃,五环[4.3.0.0 2,4 0.0 3,8 0.0 5,7 ]壬-4-烯(9),已经通过处理4,5- diiodopentacyclo [4.3.0.0的产生2, 4 .0 3,8 .0 5,7 ]壬烷(12)与正丁基锂和叔丁基锂。标题烯烃也被捕获为Diels-Alder加合物,与1,3-二苯基异苯并呋喃,2,5-二甲基呋喃和螺[2.4]庚-4,6-二烯形成。由烷基锂加成9的金字塔状双键得到的产物已被分离,并在光谱上具有充分的特征。通过使用6-31G *基集在MP2和B3LYP浓度下从头算得到了9的几何构型,烯烃应变能,氢化热和相对HOMO / LUMO能量。