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(morpholin-4-ylmethylene)bisphosphonic acid synthesis

3synthesis methods
-

Yield:32545-75-8 96%

Reaction Conditions:

with methanol at 10;Inert atmosphere;Reflux;

Steps:

Aminomethylenediphosphonic acid (XII).

General procedure: Diphosphonate IVa (7.7 g) was added upon stirring at10° to 30 mL of methanol. The mixture was heated to reflux, and then evaporated. White crystals were filtered off and kept in vacuum at 1 mmHg during 1 h. Yield 2.5 g (96%), mp 159°.

References:

Prishchenko;Livantsov;Novikova;Livantsova;Ershov;Petrosyan [Russian Journal of General Chemistry,2015,vol. 85,# 2,p. 370 - 379][Zh. Obshch. Khim.,2015,vol. 85,# 2,p. c196 - c205,10]

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