نتایج جستجو برای: nucleophilic substitution

تعداد نتایج: 59949  

2014
Gary A. Molander Steven R. Wisniewski Javad Amani

One major synthetic route to the synthesis of benzyl amines, ethers, and esters is the nucleophilic substitution of a benzylic halide. To develop a method for the facile synthesis and functionalization of the isosteric azaborines, 2-chloromethyl-2,1-borazaronaphthalene has been synthesized in one step to afford a similar common precursor to a benzylic halide. This B-N isostere has been shown to...

Journal: :Carbohydrate research 2009
Evelyn Paz-Morales Ruth Melendres Fernando Sartillo-Piscil

A seven-step total synthesis of Hagen's gland lactones 1 and 2 starting from 1,2-O-isopropylidene-alpha-D-xylofuranose 3 is reported. The success of this short and practical synthesis depends on the use of two key reactions: a stereoselective nucleophilic substitution at the anomeric position of 5 and 6, which allowed the construction of the gamma-lactone ring, and an alkyl substitution reactio...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشکده علوم پایه 1387

چکیده ندارد.

Journal: :Chem 2021

The development of new reactions is important to improve the toolbox organic chemistry. One way nudge a reaction undergo pathway different from what it normally takes. Stereoinvertive SN2 known be intolerant bulky tertiary carbon centers, which tend proceed through SN1 pathways form racemized products. This leads long-standing challenge in synthesis; that is, how prepare enantiopure compounds s...

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