Reactions of pentahapto-cyclohexadienyliron tricarbonyl cations with enamines

Abstract

Bond Angle, deg Bond Angle, deg C(2)-C (1) 1.424 (5) C(2)-C(l)-C(6) 118.3 (3) C (2)-C (1)-F e (23) 67.8 (2) C (6)-C (1) 1.510 (5) C (6)-C (1)-C (16) 114.0 (3) C(6)-C(l)-Fe(23) 109.5 (2) C(16)-C (1)1.512 ( 6) C (16)-C (1)-F e (23)

FTIR sensing of inhomogeneous systems using immobilized organometalcarbonyl probe groups

“…Tricarbonyl(h 5 -cyclohexadienyl)iron(1+) tetrafluoroborate (12), I, and dicarbonyl(h 5 -cyclohexadienyl)(triphenylphosphine)iron(1+) tetrafluoroborate (12), II, were synthesized as described in the literature. 19,20 The salt, I (1.0 g, 3.3 mmol), was dissolved in dry acetonitrile (4 ml) and 3-(diethoxymethylsilyl)propylamine (1.25 g, 6.6 mmol), was added by syringe. The solution was stirred at room temperature for 10 min.…”

Iron η5‐Complexes in Organic Synthesis

“…The metal will be removed oxidatively under very mild conditions with various reagents to give (7). In particular, metal salts (Fe3+, Cu2+) and trimethylamine N-oxide have been used most successfully (Scheme 4).…”

“…Reactions with enolates [6], enamines [7] and allylic silanes [8] in particular should be pointed out, because all these transformations can be done with high chemical yield. No additional Lewis acid is required for reactions with ally1 silanes, which demonstrates the high reactivity of these complexes (Scheme 6).…”

Metodologias de síntese de 2-arilcicloexanonas

“…O material de partida mais comumente empregado na síntese de estruturas com núcleo octaidroindólico é uma 2-arilcicloexanona, realizando-se adequadamente a funcionalização do intermediário em etapas posteriores. Umezawa e colaboradores utilizaram esta abordagem na preparação de licoranos, como 72, cuja rota sintética encontra-se resumida no Esquema 20(f) 17 .…”