Reaction of Unconjugated Dienes with [Fe(R2P(CH2)nPR2)] Species
摘要:
The effect of varying the bidentate ligand upon the reaction of unconjugated dienes with. (R2P(CH2)(n)PR2)Fe-0 species has been investigated. Depending upon the nature of the substituents at phosphorus and upon the length of the hydrocarbon chain joining the phosphorus atoms, either (eta(2):eta(2)-diene)Fe(R2P(CH2)(n)PR2) or (eta(5)-dienyl)Fe(R2P(CH2)(n)PR2)H species are formed. Extended Huckel MO-calculations have been used to assess the importance of electronic factors in influencing the course of reaction, and it can be shown that distortion of the tetrahedral geometry of the (diene)Fe species causes a destabilization.
1,4-cycloheptylene and the related allylic diradicals. Thermal nitrogen extrusion from 6,7-diazabicyclo[3.2.2]Non-6-enes
作者:Tadao Uyehara、Masayuki Takahashi、Tadahiro Kato
DOI:10.1016/s0040-4039(00)98443-0
日期:1985.1
Thermal nitrogen extrusion of 2-methylene-6,7-diazabicyclo[3.2.2]non-6-enes and 6,7- diazabicyclo[3.2.2]nona-2,6-diene,6 proceeded easily to give closure and cleavage products via the corresponding 5-methylene-1,4-cycloheptylenes and 4-cyclohepten-1,3-ylenes, respectively.
Vinyllithium cyclizations with unactivated alkenes as internal electrophiles: stereoselective formation of substituted methylenecyclopentanes
作者:A. Richard. Chamberlin、Steven H. Bloom、Laura A. Cervini、Christopher H. Fotsch
DOI:10.1021/ja00222a042
日期:1988.7
Les vinyllithiums derives des triisopropyl-2,4,6 benzenesulfonylhydrazones correspondantes subissent une addition intramoleculaire pour donner des composes cycliques lithies qui peuvent etre pieges par des electrophiles tels que l'eau
乙烯基锂衍生三异丙基-2,4,6 苯磺酰腙对应物 未添加分子内倒唐纳德组成 cycliques lithies qui peuvent etre pieges par deselectrophiles tels que l'eau
Lehmkuhl, Herbert; Fustero, Santos, Liebigs Annalen der Chemie, 1980, # 9, p. 1353 - 1360
作者:Lehmkuhl, Herbert、Fustero, Santos
DOI:——
日期:——
ONDRUSCHKA, BERND;ZIMMERMANN, GERHARD, Z. CHEM., 30,(1990) N, C. 97-98
作者:ONDRUSCHKA, BERND、ZIMMERMANN, GERHARD
DOI:——
日期:——
SALIMGAREEVA N. M.; ZHEBAROV O. ZH.; BOGATOVA N. G.; YUREV V. P., ZH. OBSHCH. XIMII, 1981, 51, HO 2, 420-425
作者:SALIMGAREEVA N. M.、 ZHEBAROV O. ZH.、 BOGATOVA N. G.、 YUREV V. P.