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A Facile Synthesis of 2-Chloro-5,7-dihydro-pyrrolo[3,4-b]pyridine-6-carboxamidine, an Annulated Nicotinoid.

✍ Scribed by Kwang-Nym Cho; Su-Jin Park; Kee-In Lee


Publisher
John Wiley and Sons
Year
2004
Weight
21 KB
Volume
35
Category
Article
ISSN
0931-7597

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## Abstract Iminophosphorane **1** reacted with an aromatic isocyanate to unexpectedly give a mixture of carbodiimides **2**, **3** and **4** through both the normal and the abnormal aza‐Wittig reactions. 3‐Aminoimidazolone **10** was obtained from the reaction of hydrazine hydrate with carbodiimid