BORON COMPOUNDS .102. ALKALI-METAL TRIALKYLHYDROXYBORATES AND (ALKALIMETALOXY)DIALKYLBORANES

被引：10

作者：

KOSTER, R ^{[1
]}

SEIDEL, G ^{[1
]}

WRACKMEYER, B ^{[1
]}

机构：

[1] UNIV BAYREUTH,ANORGAN CHEM LAB,W-8580 BAYREUTH,GERMANY

来源：

CHEMISCHE BERICHTE-RECUEIL | 1992年 / 125卷 / 03期

关键词：

BORATES; TRIALKYL-; HYDROXY-; ALKALIMETAL HYDROXIDES; BC PROTOLYSIS; BH-BORATE CATALYSIS; BORANES; (ALKALIMETALOXY)DIALKYL-; DIMERS WITH BOB BONDS; MOM BONDS; 1,3,2-DIBOROXANES, ORGANOSUBSTITUTED;

D O I：

10.1002/cber.19921250313

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Et3B (1) and 9-Et-9-BBN (2) react with alkalimetal hydroxides (LiOH, NaOH, KOH) to yield the alkalimetal hydroxytriorganoborates M-3 and M-4, resp. Heating (about 100-degrees-C) of the borates, catalyzed by NaHBEt3, leads to elimination of ethane with formation of the boranes MOBEt2 (M-5, M = Na, K) or MOBC8H14 (M-7, M = Li, Na, K), which associate to compounds with BOB, BOM, or MOM bridge bonds. At temperatures higher than 160-degrees-C (without catalyst), M-3 (M = Li, Na) and Li-4 dissociate. Na-4 is dehydroborated with formation of H-2 and NaOB(Et)C8H13 (Na-9). From K-7 and ClSiMe3 9-Me3SiO-9-BBN (10) is obtained. Na-9 reacts with ClSiMe3 to give a mixture of the unsaturated mixed borane 11 and the mixed diboroxane 12. The degree of the association of the alkalimetal compounds were determined by the specific electric conductivity measurements (kappa) and by O-17-NMR spectroscopy.

引用

页码：617 / 625

页数：9

共 45 条

[1] THERMAL-DECOMPOSITION OF TRIALKYLBORANES IN PRESENCE OF POLAR COMPOUNDS [J].

ARASE, A ;

SUZUKI, A ;

ITOH, M ;

MASUDA, Y .

NIPPON KAGAKU KAISHI, 1972, (02) :395-&

[2]

ARASE A, 1971, KOGYO KAGAKU ZASSHI, V74, P1416

[3] LIPOPHILIC LITHIUM ALKOXIDES OR DIALKYLBOROXIDES - X-RAY STRUCTURES OF [LI(MU-OR')]2 AND LI(OBR2)(TMEDA), [TMEDA = (ME2NCH2)2, R = CH(SIME3)2, R' = CBUT3 OR BR2] [J].

BECK, G ;

HITCHCOCK, PB ;

LAPPERT, MF ;

MACKINNON, IA .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1989, (18) :1312-1314

[4]

Binger P., 1974, INORG SYNTH, V15, P136

[5]

BRAUN K, 1991, THESIS U BOCHUM

[6] SYNTHESIS AND SPECTROSCOPIC AND X-RAY STRUCTURAL CHARACTERIZATION OF THE 1ST HOMOLEPTIC TRANSITION-METAL BORYLOXIDES [MN(OBTRIP2)(MU-OBTRIP2)]2 AND [FE(OBMES2)(MU-OBMES2)]2 [J].

CHEN, H ;

POWER, PP ;

SHONER, SC .

INORGANIC CHEMISTRY, 1991, 30 (14) :2884-2888

[7]

EISENBACH W, 1975, UNPUB

[8] Quatemary ammonium salts with anions containing triphenylboron [J].

Fowler, DL ;

Kraus, CA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1940, 62 :1143-1144

[9]

Frankland E., 1862, LIEBIGS ANN CHEM, V124, P129

[10] EINIGE REAKTIONEN DER DIMETHYLBORSAURE [J].

GOUBEAU, J ;

EWERS, JW .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1960, 304 (3-4) :230-237

← 1 2 3 4 5 →