Complexation of hydroxylatedent-kaurane diterpenoids with boric acid as an aid to the assignment of the13C NMR spectra

1984 ◽  
Vol 22 (8) ◽  
pp. 515-520 ◽  
Author(s):  
Francisco Fernández-Gadea ◽  
María L. Jimeno ◽  
Benjamín Rodríguez
Keyword(s):  
Boric Acid ◽  
Nmr Spectra

Borchelate mit Hydroxamsäuren: Bis(hydroximato)borate / Boron Chelates with Hydroxamic Acids: Bis(hydroximato)borates

1993 ◽  
Vol 48 (9) ◽  
pp. 1275-1278 ◽  
Author(s):  
Eberhard Bessler ◽  
Victor M. Deflon ◽  
Johann Weidlein
Keyword(s):  
Boric Acid ◽  
Elemental Analysis ◽  
Hydroxamic Acid ◽  
Nmr Spectra ◽  
Hydroxamic Acids ◽  
Potassium Bicarbonate ◽  
Boron Chelates

Potassium and triethylammonium salts of bis(acetohydroximato)borate and bis(benzohydroximato)borate have been prepared by reaction of boric acid with the corresponding hydroxamic acid and potassium bicarbonate or triethylamine, respectively. The compounds have been characterized by elemental analysis, IR, Raman and NMR spectra (1H and 11B).

scholarly journals Boric Acid Catalyzed Convenient Synthesis of Benzimidazoles in Aqueous Media

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Mohammad Reza Poor Heravi ◽  
Marjan Ashori
Keyword(s):  
Boric Acid ◽  
Nmr Spectra ◽  
Aqueous Media ◽  
Reaction Conditions ◽  
Efficient Catalyst ◽  
H Nmr ◽  
Convenient Synthesis ◽  
Ft Ir ◽  
Acid Catalyzed ◽  
C Nmr

Synthesis of benzimidazoles has been developed by theo-phenylenediamine with aldehydes using boric acid an efficient catalyst under mild reaction conditions in aqueous media. The product is applicable to aryl and heteroaryl aldehydes. This reaction led to the formation of benzimidazoles new derivatives in good yields. The FT-IR,19F-NMR,1H-NMR,13C-NMR spectra and elemental analysis confirm the structure of compounds.

Borkomplexe mit Dicarbonsäuren: Bis(oxalato)borate und Bis(malonato)borate/Boron Complexes with Dicarboxylic Acids: Bis(oxalato)borates and Bis(malonato)borates

1982 ◽  
Vol 37 (8) ◽  
pp. 1020-1025 ◽  
Author(s):  
Eberhard Bessler ◽  
Johann Weidlein
Keyword(s):  
Boric Acid ◽  
Dicarboxylic Acid ◽  
Vibrational Spectra ◽  
Nmr Spectra ◽  
Heterogeneous Reaction ◽  
Dicarboxylic Acids ◽  
Continuous Separation ◽  
Boron Complexes

Abstract Several bis(oxalato)borates and bis(malonato)borates have been prepared in heterogeneous reaction from boric acid, dicarboxylic acid and dicarboxylic salt by refluxing in benzene under continuous separation of water. The compounds were characterized by their IR and 11B NMR spectra. The vibrational spectra of the bis(oxalato)borate are discussed in detail.

Boric Acid

1889 ◽  
Vol 27 (690supp) ◽  
pp. 11021-11021
Keyword(s):  
Boric Acid

NMR spectra and relaxation in incommensurate systems in the presence of a devil's staircase

1985 ◽  
Vol 46 (7) ◽  
pp. 1205-1209 ◽  
Author(s):  
R. Blinc ◽  
S. Žumer ◽  
D.C. Ailion ◽  
J. Nicponski
Keyword(s):  
Nmr Spectra ◽  
Devil's Staircase ◽  
Devil’S Staircase

PENGAWETAN ROTAN KURANG DIKENAL SEBAGAI BAHAN BAKU MEBEL MENGGUNAKAN RENDAMAN DINGIN

2012 ◽  
Vol 4 (2) ◽  
pp. 11
Author(s):  
Saibatul Hamdi
Keyword(s):  
Boric Acid ◽  
Central Kalimantan

This research used the lesser known species as much 5 types rattan, consisted of i.e marau (Calamus Mettanensis Becc), toho (Calamus Spp), galang (Daemonorops Verticilaris Griff Mart), hijau (Calamus Spp) and simpurut (Calamus Panajuga Becc) from Central Kalimantan. Preservative used the mixture of boric acid with the borax and copper-8 by  the concentration of 1,0 %, 2,0 % and 3,0 %. Soaked time during 2 day, 4 day and 6 day by immersion chilled. Result of research indicated that the retention value varied, the greater of concentration condensation and soaking period, the greater average the value of retention while penetration result at all of treatment showed the value 100 %.Keywords:  rattan, preservation, retention, penetration, cold soaking.

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