++++++статья в heterocycles Тема решена

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Bifunctional Organocatalyst to Promote the Biginelli Reaction under Mild Conditions
Nobuyuki Mase, Daisuke Nakamura, Yasuhiro Kawano, Yuka Suzuki, and Kunihiko Takab
Volume 78, Issue 12, 2009

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http://dx.doi.org/10.3987/COM-09-11815