Safety of (1S,2S)-N1,N2-Bis(3,3-dimethylbutyl)-N1,N2-dimethylcyclohexane-1,2-diamine. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (1S,2S)-N1,N2-Bis(3,3-dimethylbutyl)-N1,N2-dimethylcyclohexane-1,2-diamine, is researched, Molecular C20H42N2, CAS is 767291-67-8, about Asymmetric Lithiation Trapping of N-Boc Heterocycles at Temperatures above -78 °C. Author is Gelardi, Giacomo; Barker, Graeme; O’Brien, Peter; Blakemore, David C..
The asym. lithiation trapping of N-Boc heterocycles using s-BuLi/chiral diamines at temperatures up to -20 °C is reported. Depending on the N-Boc heterocycle, lithiation is accomplished using s-BuLi and (-)-sparteine or the (+)-sparteine surrogate in the temperature range -50 to -20 °C for short reaction times (2-20 min). Subsequent electrophilic trapping or transmetalation-Negishi coupling delivered functionalized N-Boc heterocycles in 47-95% yield and 77:23-93:7 er. With N-Boc pyrrolidine, trapped products can be generated in ∼90:10 er even at -20 °C [e.g., 2 min reaction time at -20 °C afforded I (50% yield, 89:11 er) and II (23% yield, 91:9 er)].
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Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem