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4433-63-0

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The preparation of pentafluorophenyldihaloboranes from pentafluorophenylmercurials C6F5HgR and BX3: the dramatic dependence of the reaction direction on the ligand R
Abstract: In search of convenient preparations of C6F5BX2 (X = Cl, Br), reactions of C6F5HgR (R = C6F5, C6H5, C2H5, Br and Cl) with BX3 were studied. Under the action of BCl3 the order of the C–Hg bond cleavage is C6F5Hg–C6H5 > C6F5–HgC2H5 > C6F5–HgC6F5 >> C6F5–HgCl. With more reactive BBr3 the sequence is C6F5Hg–C6H5 > C6F5–HgC2H5 ~ C6F5Hg–C2H5 > C6F5–HgC6F5 ≥ C6F5–HgBr. During the study we found the simple way to alkyldibromoboranes which is presented by the preparation of C2H5BBr2 from C2H5HgBr and BBr3. It is the second example of synthesis of alkylmercury derivative in an addition to the earlier reported formation of cyclopropylmercurials from di(cyclopropyl)mercury and BX3. Graphic abstract: [Figure not available: see fulltext.].
Bardin, Vadim V.,Adonin, Nicolay Yu.
p. 1523 - 1531
(2019/07/22)

DERIVES MONO ET BICYCLIQUES DU BORE TETRACOORDONNE ET DES α-AMINODIACIDES: REACTIONS AVEC DIVERS NUCLEOPHILES
Water, methanol and isopropylamine react mono- and bi-cyclic boroxazolidones (2a and 3a) by attacking the boron atom and not the CO group, with formation of aminodiacid and tricoordinated boron compounds.The boron compounds undergo successive B-C cleavage
Garrigues, Bernard,Mulliez, Michel
p. 19 - 24
(2007/10/02)

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Chemical Properties

Appearance/Colour :white to slightly yellow crystalline powder
Melting Point: 161-162 °C
Boiling Point: 154 °C at 760 mmHg
Flash Point:47 °C
Density: 0.941 g/cm³
Solubility:DMSO (Slightly), Water (Slightly)
Storage Temp.:Refrigerator (+4°C)
Vapor Pressure: 1.19mmHg at 25°C
Refractive Index: 1.371
Sensitive: Hygroscopic
BRN: 1731546
PSA: 40.46000
LogP: -0.52090

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