Lang, Andreas published the artcileContribution to the chemistry of boron. Part 237. Bis(benzo-1,3,2-dioxaborolyl) oxide and 2-(2-hydroxyphenoxy)benzo-1,3,2-dioxaborole. Precursors for the synthesis of catecholborane (benzo-1,3,2-dioxaborole), Quality Control of 25240-59-9, the publication is Zeitschrift fuer Anorganische und Allgemeine Chemie (1997), 623(6), 901-907, database is CAplus.
The title compounds were prepared from B(OH)3 with catechol with different stoichiometries and were characterized by NMR and x-ray structure anal. Bis(benzo-1,3,2-dioxaborolyl) oxide (I) has C2 point group symmetry with a wide B-O-B bond angle (135.9°) in contrast to 2-(2-hydroxyphenoxy)benzo-1,3,2-dioxaborole which shows an almost planar mol. structure. These mols. form infinite chains in the solid state. 2-Hydroxy-1,3,2-dioxaborole crystallizes as a OH…O bridged dimer. Compound I proved to be a good starting material for the preparation of catecholborane.
Zeitschrift fuer Anorganische und Allgemeine Chemie published new progress about 25240-59-9. 25240-59-9 belongs to alcohols-buliding-blocks, auxiliary class Boronic acid and ester,Boronic Acids,Boronate Esters, name is 4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-ol, and the molecular formula is C6H13BO3, Quality Control of 25240-59-9.
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