ميسيلات

(تم التحويل من Mesylate)
Structural formula of the mesylate anion
Ball-and-stick model of the mesylate anion

في الكيمياء، تعتبر الميسيلات Mesylate أي ملح أو إستر لحمض الميثان سلفونيك (CH3SO3H). في الأملاح تتواجد الميسيلات في صورة أنيونCH3SO3 .

وعند تعديل الأسماء الدولية غير المملوكة INN لمادة دوائية تحوي هذه المجموعة أو الأيون فالتهجئة الصحيحة ستكون mesilate .[1]

Mesylate esters are a group of organic compounds that share a common functional group with the general structure CH3SO2O-R , abbreviated MsO-R, where R is an organic substituent. Mesylate is considered an excellent leaving group in nucleophilic substitution reactions.

Mesyl is the term for the methylsulfonyl or CH3SO2- (Ms-) functional group. For example, methanesulfonyl chloride is often referred to as mesyl chloride.

التحضير

Mesylates may be prepared using an alcohol and methanesulfonyl chloride in the presence of a base, often amine bases such as triethylamine.[2] Mesylates can also be prepared by combining an alcohol, methanesulfonic anhydride and base, although this method is generally used only if the nucleophilicity of chloride is a concern.

انظر أياض

المصادر

  1. ^ World Health Organization (February 2006). "International Nonproprietary Names Modified". INN Working Document 05.167/3. WHO. Retrieved December 5, 2008.
  2. ^ Rick L. Danheiser, Yeun-Min Tsai, and David M. Fink (1993). "A General Method for the Synthesis of Allenylsilanes: 1-Methyl-1-(trimethylsilyl)allene". Organic Syntheses{{cite journal}}: CS1 maint: multiple names: authors list (link); Collected Volumes, 8, pp. 471 . (a procedure illustrating the use of mesylates)