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ChemicalBook--->CAS DataBase List--->1627917-17-2

1627917-17-2

1627917-17-2 Structure

1627917-17-2 Structure
IdentificationBack Directory
[Name]

B-benzo[b]naphtho[2,3-d]furan-2-yl-boronic acid
[CAS]

1627917-17-2
[Synonyms]

NDPBA
CUSTOMS SYNTHESIS
naphtho[2,3-b]benzofuran-2-ylboronic acid
naphtho[2,3-b][1]benzofuran-2-ylboronic acid
Benzo[b]naphtho[2,3-d]furan-2-ylboronic acid
B-benzo[b]naphtha[2,3-d]furan-2-yl-boronic acid
B-benzo[b]naphtho[2,3-d]furan-2-yl-boronic acid
Boronic acid,B-benzo[b]naphtho[2,3-d]furan-2-yl-
[Molecular Formula]

C16H11BO3
[MDL Number]

MFCD30187284
[MOL File]

1627917-17-2.mol
[Molecular Weight]

262.07
Chemical PropertiesBack Directory
[Boiling point ]

529.2±42.0 °C(Predicted)
[density ]

1.37±0.1 g/cm3(Predicted)
[pka]

8.25±0.30(Predicted)
Safety DataBack Directory
[Symbol(GHS) ]


GHS07
[Signal word ]

Warning
[Hazard statements ]

H315-H319-H227
[Precautionary statements ]

P501-P210-P264-P280-P302+P352-P370+P378-P337+P313-P305+P351+P338-P362+P364-P332+P313-P403+P235
Hazard InformationBack Directory
[Uses]

B-benzo[b]naphtho[2,3-d]furan-2-yl-boronic acid can be used as organic synthesis intermediate and pharmaceutical intermediate, mainly used in laboratory research and development process and chemical production process.
[Synthesis]


12.6g of intermediate (A) and 500 mL of tetrahydrofuran (dehydrated) were put in a flask, and the resultant was cooled to -78°C. 28 mL of n-BuLi (1.60M in hexane) was added, and stirring was conducted for 2 hours while elevating the temperature to 0°C. Then, the solution was again cooled to -78°C, and 11.6g of B(OMe) 3 was added. After stirring at 10 minutes at -78°C, stirring was further conducted for 5 hours while gradually elevating the temperature to room temperature.  After completion of the reaction, 1 N HCl aq. (100 mL) was added, and the reaction solution was stirred at room temperature for 1 hour. Then, the solution was transferred to a separating funnel, and extracted with ethyl acetate. This solution was dried with MgSO 4, concentrated and washed with hexane, whereby 7.2g (yield: 65%) of white solids of intermediate (B) were obtained.
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