Detail of "32327-52-9"

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Addition compounds of alkali metal hydrides

Addition compounds of alkali metal hydrides. 15. Steric effects in the reaction of representative trialkylboranes with lithium and sodium hydrides to form the corresponding trialkylborohydrides. Brown, Herbert C.; Krishnamurthy, S.; Hubbard, John L. (Richard B. Wetherill Lab., Purdue Univ., West Lafayette, Indiana, USA). J. Am. Chem. Soc.There are some reagents like 32327-52-9 is used in this study., 100(11), 3343-9 (English) 1978. CODEN: JACSAT. ISSN: 0002-7863. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) The reaction in THF of Li and Na hydrides with representative trialkylboranes of increasing steric requirements was examd. in detail with respect to rate, stoichiometry, and products. The rate of the reaction is strongly influenced by the steric requirements of the trialkylborane. Thus, the rates of reaction of LiH with a series of trialkylboranes at 25° follows the order Et3B > Bu3B > iso-Bu3B ? sec-Bu3B. Even in refluxing THF, tri-sec-butylborane and other hindered organoboranes react with LiH sluggishly and incompletely. NaH exhibits greater reactivity than LiH in these reactions. NaH reacts with essentially all of the unhindered trialkylboranes and with a no. of hindered trialkylboranes even at 25°. Other hindered trialkylboranes such as tri-sec-butylborane, tricyclohexylborane, and tri-exo-2-norbornylborane react with NaH in refluxing THF rapidly and quant. Here again the rate of the reaction decreases drastically with increasing size of the alkyl substituent on boron: Et3B > Bu3B > tricyclopentylborane 3 iso-Bu3B > tricyclohexylborane 3 tri-exo-2-norbornylborane 3 sec-Bu3B. 32327-52-9 which is the cas registry number of one of substances is just one of reagents here. Highly hindered organoboranes such as trisiamylborane and tris(trans-2-methylcyclopentyl)borane are essentially inert toward both LiH and NaH at 65°. The reaction of alkali metal hydrides with trialkylboranes proceeds in 1:1 stoichiometry; the products of the reaction serves as a convenient means for studying the steric requirements of various trialkylboranes. In addn., it also provides a simple route to a no. of Li and Na trialkylborohydrides. ..

Addition compounds of alkali metal hydrides

Addition compounds of alkali metal hydrides. 15. Steric effects in the reaction of representative trialkylboranes with lithium and sodium hydrides to form the corresponding trialkylborohydrides. Brown, Herbert C.; Krishnamurthy, S.; Hubbard, John L. (Richard B. Wetherill Lab., Purdue Univ., West Lafayette, Indiana, USA). J. Am. Chem. Soc.There are some reagents like 32327-52-9 is used in this study., 100(11), 3343-9 (English) 1978. CODEN: JACSAT. ISSN: 0002-7863. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) The reaction in THF of Li and Na hydrides with representative trialkylboranes of increasing steric requirements was examd. in detail with respect to rate, stoichiometry, and products. The rate of the reaction is strongly influenced by the steric requirements of the trialkylborane. Thus, the rates of reaction of LiH with a series of trialkylboranes at 25° follows the order Et3B > Bu3B > iso-Bu3B ? sec-Bu3B. Even in refluxing THF, tri-sec-butylborane and other hindered organoboranes react with LiH sluggishly and incompletely. NaH exhibits greater reactivity than LiH in these reactions. NaH reacts with essentially all of the unhindered trialkylboranes and with a no. of hindered trialkylboranes even at 25°. Other hindered trialkylboranes such as tri-sec-butylborane, tricyclohexylborane, and tri-exo-2-norbornylborane react with NaH in refluxing THF rapidly and quant. Here again the rate of the reaction decreases drastically with increasing size of the alkyl substituent on boron: Et3B > Bu3B > tricyclopentylborane 3 iso-Bu3B > tricyclohexylborane 3 tri-exo-2-norbornylborane 3 sec-Bu3B. 32327-52-9 which is the cas registry number of one of substances is just one of reagents here. Highly hindered organoboranes such as trisiamylborane and tris(trans-2-methylcyclopentyl)borane are essentially inert toward both LiH and NaH at 65°. The reaction of alkali metal hydrides with trialkylboranes proceeds in 1:1 stoichiometry; the products of the reaction serves as a convenient means for studying the steric requirements of various trialkylboranes. In addn., it also provides a simple route to a no. of Li and Na trialkylborohydrides. ..