منابع مشابه
Azides in Carbohydrate Chemistry
The fi rst az.ide-contain ing sugar, a glycosyl azide. was reponed in 1930 by Bertho. j Since that lime various methods have been developed for the introduction of azides at d ifferent positions of sugars. A survey of available methods is given in Section 16.2. Unlillhc lale I 970s, azidcs contai ned in carbohydrate deri vatives were simply used as accessible syn-thons [or amities because of th...
متن کاملUsing Functionalized Silyl Ligands To Suppress Solvent Coordination to Silyl Lanthanide(II) Complexes
The reaction of the potassium 1,3-trisilanediide Me2Si[Si(Me3Si)2K]2 with SmI2 and YbI2 was found to give the respective disilylated complexes Me2Si[Si(Me3Si)2]2Sm·2THF and Me2Si[Si(Me3Si)2]2Yb·2THF. Desolvation of coordinated solvent molecules in these complexes made their handling difficult. However, using a number of functionalized silanide ligands, complexes with a diminished number or even...
متن کاملChemoselective silyl transfer in the Mukaiyama aldol reaction promoted by super silyl Lewis acid.
In the silyl Lewis acid-promoted Mukaiyama aldol reaction, the steric and electronic properties of the silyl group on the silyl Lewis acid influence the reaction mechanism and product distribution. When super silyl triflates such as (TMS)3SiOTf and (TES)3SiOTf are used as Lewis acids, the silyl group of the silyl enol ether chemoselectively transfers to the product. The mechanistic details have...
متن کامل1 , 2 - Di ( silyl ) benzene and l , 4 - Dibromo - 2 , 5 - di ( silyl ) benzene
Silanes, Silylbenzenes, Di(silyl)benzenes. Bromo(silyl)benzenes 1,2-Di(silyl)benzene (3). has been prepared in a three-step process starting with the reac tion of 1 ,2-dibromobenzene and /?-tolyl(chloro)silane with magnesium in tetrahydrofuran, which affords l,2-bis(p-tolylsilyl)benzene (1) as a stable high-yield intermediate. Compound 1 has been converted into 1 .2-bis(trifluoromethanesulfona...
متن کاملPhotochemistry of Diazocompounds and Azides in Argon
The introduction of matrix techniques to the synthesis and study of reactive organic molecules has substantially extended the range of molecules available for investigation (Ref. 1). It is now increasingly the case that we need new chemical methods to make progress in this area of investigation. Diazocompounds and azides have proved especially useful as starting points for a new style of photoc...
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ژورنال
عنوان ژورنال: Journal of Synthetic Organic Chemistry, Japan
سال: 1985
ISSN: 0037-9980,1883-6526
DOI: 10.5059/yukigoseikyokaishi.43.176