Manometric Determination of Active Hydrogen by Reaction with Diborane.

Martin, F. E.; Jay, R.

doi:10.1021/ac60188a037

Cited by 11 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The direct measurement of the volume of hydrogen gas produced upon hydrolysis of a boron hydride provides a convenient and accurate method for the determination of either the purity of a boron hydride or the concentration of a boron hydride in an appropriate solvent45 Also, a simple, rapid, and quantitative procedure for determining acidic hydrogens in organic materials has been developed based upon hydrogen evolution from a large excess of BH3-THF. 46 The method is especially valuable for hydroxyl group determinations, and a precision of about 1 % is possible.…”

Section: ^>B-hmentioning

confidence: 99%

“…O-CH(CH3)2 + H2(46) Q|-|2 | hydroboration alkylborane products Reagents other than BF3 can enhance the cleavage of ether by diborane. For example, cleavage of diglyme by diborane occurs rapidly at low temperatures in the presence of either mercaptans128 or elemental halogens.129 These reactions undoubtedly involve a B-X type of cleavage reagent and do not involve a reductive cleavage by a boron hydride.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Reduction of organic compounds with diborane

Lane¹

1976

Chem. Rev.

150

View full text Add to dashboard Cite

Section: ^>B-hmentioning

confidence: 99%

mentioning

confidence: 99%

Reduction of organic compounds with diborane

Lane¹

1976

Chem. Rev.

150

View full text Add to dashboard Cite

“…Amines and esters do not react. Martin and Jay (270) determined active hydrogen by reaction of the sample with diborane and determination of the increase in pressure manometrically. Pechanec and Horacek (322) reacted the sample with lithium aluminum hydride in a modified Warburg ma-nometer for the determination of active hydrogen.…”

Section: Schmalzmentioning

confidence: 99%

Organic Microchemistry

S.¹,

Gutterson²

1964

Anal. Chem.

View full text Add to dashboard Cite

Determination of hydroxyl groups in polymers. Review

Boiko¹,

Grischenko²

1985

Acta Polymerica

View full text Add to dashboard Cite

The analysis of hydroxyl groups in polymers is reviewed. Recent achievements of chemical, physico-chemical and physical methods for the determination of hydroxyl groups and their differentiation by reactivity have been examined. Particularly, infrared spectroscopy and nuclear magnetic resonance used for this determination are considered. Die Bestimmung yon Hydroxylgruppen in Polymeren. FortschrittsberichtIn dem Bericht werden neuere Entwicklungen chemischer, physikalisch-chemischer und physikalischer Methoden zur Bestimmung von Hydroxylgruppen und ihrer Differenzierung hinsichtlich der Reaktivitat dargestellt. Insbesondere wird die Anwendung der Infrarotspektroskopie und der magnetischen Kernresonanz behandelt. Onpeaenenue zur3powuJabnwx zpynn 8 nom.wepax. O630p 0 6 3 0~ IIOCBfiQeH aHaJIH8y rHAPOKCHnbHhIX rpynn B IIOJIEiMepaX. PaCCMOTpeHbI IlOCJIeAHlle AOCTEiXeHllfi XHMH9eCKHX, @H3HHO-XHMH9eCHHX Ei @H3H4eCKHX MeTOAOB KOJIEi9eCTBeHHOrO OIIpeAeneHElH I' HApOKCHJIbHbIX I'pyIIII H HX AH@-@epeHqEi~EiEinOpeaKqHOHHOltCnOCO6HOCTH. ~C O 6 O~B H l l M~H H~~~~j I~H O H H @~~K~~C H O~C I I~K T~O C MarHHTHOMY pe30HaHCy. Chemical methods of analysisChemical methods a r e simple a n d accessible, t h e y do not require special equipment a n d expensive instruments. At t h e same t i m e t h e y a r e rather time-consuming a n d require considerable amounts of t h e substance t o be analyzed. These methods can mainly give quantitative information. If t h e differentiation of HG is necessary, they become much more time-consuming. Recently t h e effective methods of chemical analysis have appeared which enable HG t o b e determined rapidly a n d exactly enough. Acylation of HG is most widely used, its application for polymers is detailed in t h e handbooks o n polymer analysis. The classical acylation procedure [27, 281 uses acetic (AA) or phthalic anhydride (PA) in pyridine solution, t h e latter being t h e solvent and catalyst of t h e reaction. T h e use of propionic [29], succinic [30--321, nitrobenzoic [33], osulfobenzoic [34], nitrophthalic [35]anhydrides for t h e same purpose is described. As a rule, primary a n d secondary HG a r e fully acylated within 1 t o 2 h a t 100 t o 115°C. Pyromellitic dianhydride (PMDA) [36-381 is more effective. It has as high activity as AA a n d does not interact with aldehyde groups a n d phenolic HG which is characteristic of PA. Dimethylsulfoxide (DMSO) is especially recommended as a solvent [37].T o acylate HG, more active acyl chlorides can b e used. BOIKO and GRISHCHENKO:Deterinination of liydroryl groups in polymers. Review Acta Polymcrica 36 (1985) Nr. 9

show abstract

Manometric Determination of Active Hydrogen by Reaction with Diborane.

Cited by 11 publications

References 23 publications

Reduction of organic compounds with diborane

Reduction of organic compounds with diborane

Organic Microchemistry

Determination of hydroxyl groups in polymers. Review

Contact Info

Product

Resources

About