Studies on Organometallic Compounds. VII. Reaction of Di-tert-butyl Dicarbonate with .ALPHA.-Trialkylstannyl Derivatives of Pyridine, Quinoline, and Isoquinoline.
作者:Yutaka YAMAMOTO、Hidekazu OUCHI、Takuo TANAKA
DOI:10.1248/cpb.43.916
日期:——
Di-tert-butyl dicarbonate was found to be effective for direct introduction of a tert-butoxycarbonyl group at the α-position of the pyridine nucleus via the trialkylstannyl group; reaction of α-trialkylstannyl derivatives of pyridine, quinoline, and isoquinoline with di-tert-butyl dicarbonate gave the corresponding α-tert-butoxycarbonyl derivatives in good yields, althrough small amounts of a variety of by-products were formed except in the case of pyridine.
A new convergent synthesis of alpha - substituted - beta - carbolines
作者:P. Rocca、F. Marsais、A. Godard、G. Queguiner
DOI:10.1016/s0040-4020(01)90161-9
日期:1993.4
New convergentsynthesis of natural α-substituted-β-carbolines through metalations, cross-couplings and intramolecular substitution via (2-aminobenzene)-boronic acid, arylstannanes and ortho-fluoroiodopyridines.
The paper describes a new general synthesis of α-substitutedδ-carbolines based on key steps such as metalation, cross-coupling and cyclization.
本文基于金属化,交叉偶联和环化等关键步骤,描述了一种新的α-取代的δ-咔啉的一般合成方法。
Simple and Mild Method for Preparation of .ALPHA.-Pyridinecarboxylates and .ALPHA.-Pyridyl Ketones via Trimethylstannyl Derivatives.
作者:Yutaka YAMAMOTO、Hidekazu OUCHI、Takuo TANAKA
DOI:10.1248/cpb.43.1028
日期:——
Alkoxycarbonylation and acylation at the α-position of pyridine, quinoline, and isoquinoline via the respective trimethylstannyl derivatives were satisfactorily performed by employing ethyl chloroglyoxylate and acylformyl chloride under mild conditions.
Synthesis of new pyridine intermediates as precursors for the elaboration of streptonigrin analogues by the metalation-cross-coupling strategy
作者:V. Pomel、J. C. Rovera、A. Godard、F. Marsais、G. Quéguiner
DOI:10.1002/jhet.5570330670
日期:1996.11
Starting from available 2-amino-6-chloro-3-nitropyridine, synthesis of 3-amino-6-pyridinecarboxylic acid derivatives precursor for pyridine ring C of streptonigrin analogues is described.