General method for synthesis of 2-heterocyclic N-methyliminodiacetic acid boronates.
نویسندگان
چکیده
A wide range of 2-pyridyl and other difficult-to-access heterocyclic N-methyliminodiacetic acid boronates can be readily prepared from the corresponding bromides via a new method involving direct transligation of 2-heterocyclic trialkoxyborate salts with N-methyliminodiacetic acid (MIDA) at elevated temperatures.
منابع مشابه
Tandem Cycloisomerization/Suzuki Coupling of Arylethynyl MIDA Boronates.
A tandem gold-catalyzed cycloisomerization/Suzuki cross coupling sequence involving arylethynyl-N-methyliminodiacetic acid boronates is described. Combining the mildness of homogeneous gold catalysis with the versatility of N-methyliminodiacetic acid (MIDA) boronates, this tandem two-step method enables the rapid assembly of various aryl-substituted heterocycles without having to isolate or pur...
متن کامل(1-bromovinyl)-MIDA boronate: a readily accessible and highly versatile building block for small molecule synthesis.
Iterative cross-coupling represents a potentially general approach for the simple, efficient, and flexible construction of a wide range of functional small molecules. In this context, (1-bromovinyl)-N-methyliminodiacetic acid (MIDA) boronate is a very useful building block for small molecule synthesis. This compound can serve as a starting material for the preparation of a wide range of 1,1-dis...
متن کاملVinyl MIDA boronate: a readily accessible and highly versatile building block for small molecule synthesis
Iterative cross-coupling represents a potentially general approach for the simple, efficient, and flexible construction of natural products, pharmaceuticals, and materials. N-Methyliminodiacetic acid (MIDA) boronates represent a promising platform for the development of this type of synthesis strategy. This report describes the discovery that vinyl MIDA boronate (1) is an airand chromatographic...
متن کاملRegioselective routes to orthogonally-substituted aromatic MIDA boronates.
A series of tetrasubstituted aromatics has been synthesized, many of which are based on elaborated N-methyliminodiacetic acid (MIDA)-boronates. A sequence employing nitration, bromination, stepwise Suzuki-Miyaura (SM) coupling with a boronic acid, then base-mediated unmasking of the boronic acid from the MIDA-boronate and a second SM-coupling has led to our desired, mainly 1,2,4,5-substituted t...
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عنوان ژورنال:
- Organic letters
دوره 12 10 شماره
صفحات -
تاریخ انتشار 2010