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url url url url
  2. Weltenzyklopädie
  3. واکنش همولوگ‌شدن - ویکی‌پدیا، دانشنامهٔ آزاد
واکنش همولوگ‌شدن - ویکی‌پدیا، دانشنامهٔ آزاد
از ویکی‌پدیا، دانشنامهٔ آزاد

در شیمی آلی، واکنش همولوگ‌شدن یا همولوگاسیون (به انگلیسی: Homologation)، هر واکنش شیمیایی است که واکنش‌دهنده را به عضو بعدی سری همولوگ تبدیل می‌کند. سری همولوگ گروهی از ترکیبات هستند که در یک واحد ثابت، معمولاً گروه متیلن (–CH
2–)، با هم تفاوت دارند. هنگامی که تعداد واحدهای ساختاری تکراری در مولکول‌ها افزایش می‌یابد، واکنش‌دهنده‌ها تحت همولوگ‌شدن قرار می‌گیرند. رایج‌ترین واکنش‌های همولوگ‌شدن باعث افزایش تعداد واحدهای متیلن (–CH
2–) زنجیره اشباع در مولکول می‌شود.[۱] به عنوان مثال، واکنش آلدهیدها یا کتون‌ها با دیازومتان یا متوکسی‌متیل‌تری‌فنیل‌فسفین برای ایجاد همولوگ بعدی در این سری.

نمونه‌هایی از واکنش‌های همولوگ‌شدن عبارتند از:

منابع

  1. ↑ Encyclopedia of Inorganic Chemistry doi:10.1002/0470862106.id396
  2. ↑ D. Gray, C. Concellon and T. Gallagher (2004). "Kowalski Ester Homologation. Application to the Synthesis of β-Amino Esters". J. Org. Chem. 69 (14): 4849–4851. doi:10.1021/jo049562h. PMID 15230615.
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