Organometallic derivatives of natural products: dicobalt hexacarbonyl complexes of geranyl-alkynes
作者:Angela Moore、Johannes Ostermann、Yannick Ortin、Michael J. McGlinchey
DOI:10.1039/c6nj00622a
日期:——
migration to form previously unknown E and Z 1-methoxy-3,7-dimethyl-1,6-octadiene in low yield. Sodium propargyl alkoxide and geranyl bromide yield propargyl geranyl ether, 13; subsequent reaction with dicobalt octacarbonyl and then bis(diphenylphosphino)methane furnishes the corresponding alkyne–Co2(CO)4(dppm) tetrahedral cluster, 16. Reaction of geranylacetone with phenylethynyl-lithium, and then with
用二铁九碳羰基处理甲基香叶基醚会导致氢迁移,从而以低收率形成以前未知的E和Z 1-甲氧基-3,7-二甲基-1,6-辛二烯。炔丙基醇钠和香叶基溴化物产生炔丙基香叶基醚,13。随后与二羰基二钴八羰基反应,然后与双(二苯基膦基)甲烷反应,得到相应的炔烃-Co 2(CO)4(dppm)四面体簇,16。香叶基丙酮与苯基乙炔基锂反应,然后与Co 2(CO)8反应形成(1-苯基-3,7,11-三甲基十二烷基-6,10-二烯-1-yn-3-醇)Co 2(CO )6,19。可以通过适当的醇与三氯乙酰氯和然后的Co 2(CO)8反应,以非常好的收率制得carbynyltricobaltnona羰基簇RC(O)CCo 3(CO)9,其中R =香叶基23或法呢基25。,或与金属稳定的离子[Co 3(CO)9 C C O] +,24反应。潜在用途的这些(η 2 -alkyne)在Pauson-Khand反应或尼古拉斯环化二钴复合物进行了讨论。