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ChemicalBook CAS DataBase List ZINC 2,11,20,29-TETRA-TERT-BUTYL-2,3-NAPHTHALOCYANINE
39049-43-9

ZINC 2,11,20,29-TETRA-TERT-BUTYL-2,3-NAPHTHALOCYANINE synthesis

2synthesis methods
-

Yield:39049-43-9 45%

Reaction Conditions:

with quinoline;1,8-diazabicyclo[5.4.0]undec-7-ene at 180; for 20 h;

Steps:

Synthesis of a naphthalocyanine structure

A mixture of 6-tert-butyl-2,3-dicyanonaphthalene A (18.8 g, 0.08 mol), anhydrous zinc acetate B (3.7 g, 0.02 mol), dry quinoline 100 mL and DBU 12 mL was stirred at 180 deg C for 20 hr. After cooling, the mixture was poured into methanol (3500 mL). The crude product was collected by vacuum filtration, washed with methanol and purified by Soxhlet extraction with methanol for 2 days. Finally, the dark green residue was chromatographed on silica gel with chloroform as the eluting solvent. Chloroform was evaporated and product triturated with methanol, again collected by filtration and vacuum dried at 70 deg C. Yield was 9 g or 45% of theoretical.

References:

WO2013/55640,2013,A2 Location in patent:Page/Page column 26

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