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A mixture of NVP (0.50 ml, 4.5 mmol), appropriate amount of [VBIM]+Cl- (1-¶¡»ù-3-ÒÒÏ©»ùßäßòÂÈÑÎ), AIBN (6.9 mg, 0.039 mmol) and 5 ml methanol was first degassed by three freeze/thaw cycles and then placed in a preheated oil bath set at 60 oC with stirring.  ÇëÎʾßÌå¸ÃÈçºÎ²Ù×÷?±¾È˾ۺÏʧ°ÜÁË£¬²»ÖªµÀʲôԭÒò£¬Íû¸÷λ°ïæ½â´ð£¬Ð»Ð»
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