کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1270830 | 972509 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A facile synthesis of novel pyrrolizidines under classical and ultrasonic conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Novel pyrrolizidines (1) were synthesized from 1, 3-dipolar cycloaddition of azomethine ylides and dipolarophiles (4). The reactions were highly diastereoselective and regioselective and were carried out under reflux and ultrasonic condition at room temperature. In general, milder conditions and moderate improvements in rates and reaction times were observed when ultrasonic condition was used. The products were obtained in high yields, and their structures were determined by 1H and 13C NMR spectral data and X-ray diffraction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 15, Issue 2, February 2008, Pages 124-128
Journal: Ultrasonics Sonochemistry - Volume 15, Issue 2, February 2008, Pages 124-128
نویسندگان
Khosrow Jadidi, Ramin Gharemanzadeh, Morteza Mehrdad, Hossein Reza Darabi, Hamid Reza Khavasi, Davoud Asgari,