Titlebook: Stereodirected Synthesis with Organoboranes; Donald S. Matteson Book 1995 Springer-Verlag Berlin Heidelberg 1995 Aldehyde.Ketone.alkene.ca

phlegm

蜈蚣

a variety of reasons. These may include assessing intellectual development (e.g., mental retardation), monitoring the progression of a disease process (e.g., dementia), documenting recovery of function following insult (e.g., stroke), or evaluating the therapeutic efficacy of a specific treatment (

MODE

享樂(lè)主義者

蛤肉

Alkenylboranes and Control of Olefinic Geometry, nucleofuge, such as halide, alkoxide, amino, or alkylthio. The other is via direct electrophilic replacement of boron from an alkenylborane. Many known examples in the first category derive the stereospecifically β-substituted borane from an alkenylborane, though there are significant exceptions th

高原

飛來(lái)飛去真休

Asymmetric Hydroboration Chemistry, .-2-butene with (?)-diisopinocampheylborane (.) derived from (+)-α-pinene proceeded with high diastereoselectivity to form the intermediate trialkylborane . [1, 2]. When . of high enantiomeric purity [3] is used and the procedure is otherwise optimized, this process yields 98% ee in the final produ

Tincture

極大痛苦

Asymmetric Reductions and Miscellaneous Reactions,e two major categories of enantioselective reductions include those that donate hydride by p-elimination of boron from alkylboranes (Section 9.2), and those that donate hydride directly by breaking a B—H bond (Section 9.3). Some of the latter have been made catalytic (Section 9.3.3), and even though

啞巴