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ChemicalBook CAS DataBase List 1-pinacolato-2-(1,8)diamo-naphthalenylborane

1-pinacolato-2-(1,8)diamo-naphthalenylborane synthesis

3synthesis methods
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Yield: 90%

Reaction Conditions:

with sodium methylate in methanol at 70; for 4 h;Inert atmosphere;

Steps:


Example: 50mL reaction flask was placed in a magnetic stirrer, followed by adding borate dicarboxylate ester (1.0 mmol, 1.0 eq.), 1,8-diaminonaphthalene (1.0 mmol, 1.0 eq.) And sodium methoxide (1.0 mmol, 1.0 eq.), After nitrogen was purged three times, 10 mL of solvent methanol was added under a nitrogen stream, and the reaction was heated to 70 ° C. After stirring for four hours, The reaction ends. After the solvent was removed by distilling off the toluene, The asymmetric bisphosphonization reagent Bpin-Bdan was isolated by column chromatography, and the yield was 90%

References:

Xijing College;Ding Siyi;Zhao Yuzhen;Ma Qiang;Tian Shaopeng;Liu Jiaxin;Yu Fei CN106946916, 2017, A Location in patent:Paragraph 0012