ChemicalBook CAS DataBase List Bis(neopentyl glycolato)diboron

Bis(neopentyl glycolato)diboron synthesis

4synthesis methods

Product Name:Bis(neopentyl glycolato)diboron
CAS Number:201733-56-4
Molecular formula:C10H20B2O4
Molecular Weight:225.89

126-30-7 Synthesis

126-30-7
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201733-56-4
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$5.00/1g

Yield:201733-56-4 54.5%

Reaction Conditions:

with tetrakis(dimethylamido)diborane in toluene at 20 - 105; for 1.03333 h;

Steps:

2 Preparation of bis(neopentylglycolato)diboron
Tetrakis (dimethylamino) diboron (9.89 g, 52.65 mmol) was added to a solution of 2,2- dimethyl-1, 3-propanediol [neopentylglycol] (10.42 g, 100 mmol) in toluene (40 mL) at room temperature within two minutes. The mixture was heated to 105 C and an evolution of dimethylamine started to occur at 85 C. The mixture was heated for 60 minutes at 105 C then the toluene was removed to give a white solid: 11.39 g, 95.8%. Recrystallisation from toluene gave bis (neopentylglycolato) boron (MF: CLOH20B204 ; FW: 225.89) 6.48 g, 54.5%. mp 182.5-184. 5 C. 8 (CDCL3, 200 MHz) 0.94 (s, 12H); 3.58 (s, 6H) ppm. 13C 8 (CDCL3, 50 MHz) 22.3 (4x CH3) ; 31.9 (2x C), 71.7 (4x CH2) ppm. The mother liquor was kept for further recrystallization.

References:

BORON MOLECULAR PTY LTD WO2004/76467, 2004, A1 Location in patent:Page 15

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13675-18-8 Synthesis