Qualitative Test for Distinguishing Tris(1-aziridinyl)-Phosphine Oxide (APO) and Tetrakis(hydroxymethyl) Phosphonium Chloride

1959 ◽  
Vol 31 (12) ◽  
pp. 2051-2052 ◽  
Author(s):  
T. D. Miles ◽  
A. C. Delasanta
Keyword(s):  
Phosphine Oxide ◽  
Phosphonium Chloride ◽  
Qualitative Test

scholarly journals Cleavage of the carbon–phosphorus bond in chloromethyl–phosphorus compounds by phosphorus pentachloride

1968 ◽  
Vol 46 (22) ◽  
pp. 3573-3577 ◽  
Author(s):  
Arlen W. Frank
Keyword(s):  
Carbon Tetrachloride ◽  
Phosphine Oxide ◽  
Bond Cleavage ◽  
Phosphorus Pentachloride ◽  
Phosphorus Trichloride ◽  
Phosphorus Compounds ◽  
Concerted Mechanism ◽  
Phosphonium Chloride

A novel carbon–phosphorus bond cleavage is described. Chloromethylphosphonic dichloride (2) and bis(chloromethyl)phosphinic chloride (1) both react smoothly and quantitatively with phosphorus pentachloride at 95–100°, giving carbon tetrachloride and a P(III) fragment containing one less carbon–phosphorus bond: phosphorus trichloride from 2 and trichloromethylphosphonous dichloride from 1. Under the same conditions, tris(chloromethyl)phosphine oxide (3) forms a complex (4) which subsequently breaks down to trichlorobis(trichloromethyl)phosphorane (5), diphenyl chloromethylphosphonate (7) suffers chlorination without cleavage, and tetrakis(chloromethyl)phosphonium chloride (6) is neither chlorinated nor cleaved. A concerted mechanism is proposed which accounts for ail of these results.

HYDROXYMETHYL PHOSPHORUS DERIVATIVES FROM TETRAKIS(HYDROXYMETHYL) PHOSPHONIUM CHLORIDE. REACTION WITH LEAD CARBONATE AND OXIDE

1963 ◽  
Vol 41 (4) ◽  
pp. 821-825 ◽  
Author(s):  
N. Filipescu ◽  
L. M. Kindley ◽  
H. E. Podall ◽  
F. A. Serafin
Keyword(s):  
Phosphine Oxide ◽  
Lead Oxide ◽  
Elevated Temperatures ◽  
Azeotropic Distillation ◽  
No Oxidation ◽  
Reaction Conditions ◽  
Lead Carbonate ◽  
Propyl Alcohol ◽  
Phosphonium Chloride ◽  
Reaction Proceeds

A novel and convenient method has been developed for the preparation of tris(hydroxy-methyl) phosphine oxide (THPO) from tetrakis (hydroxymethyl) phosphonium chloride (THPC). The method consists essentially of oxidative deformylation of THPC with lead carbonate in n-propyl alcohol. The reaction is facilitated by azeotropic distillation of di-n-propylformal and n -propyl alcohol.The reaction of THPC with lead carbonate as well as with lead oxide has been studied in detail in aqueous solution and in n-propyl alcohol. The reaction proceeds via the initial formation of tetrakis(hydroxymethyl) phosphonium hydroxide (THPOH) followed by deformylation to tris (hydroxymethyl) phosphine (THP). THP then undergoes oxidation by air as well as by lead carbonate or oxide to THPO. If air is bubbled through the mixture at elevated temperatures, atmospheric oxidation predominates with little or no oxidation by the lead compound.Depending upon the reaction conditions, a phosphonium hydroxide, a phosphine, or a phosphine oxide are products of the reaction of tetrakis(hydoxymethyl) phosphonium chloride with lead carbonate or oxide.

PENGARUH LAMA FERMENTASI TERHADAP KADAR FLAVONOID TOTAL PADA EKSTRAK TAPE BIJI NANGKA (Artocarpus heterophylla Lamk.)

2020 ◽  
pp. 53-61
Author(s):  
Nada Nabila Sari ◽  
S Suharyanto
Keyword(s):  
Extraction Method ◽  
Positive Sample ◽  
Total Flavonoid ◽  
Test Results ◽  
Fermentation Time ◽  
Flavonoid Compounds ◽  
Community People ◽  
Qualitative Test ◽  
Seed Extracts

Biji nangka kurang diminati oleh masyarakat sebagai bahan pangan. Biji nangka memiliki kandungan senyawa flavonoid yang dapat digunakan sebagai pengobatan. Tujuan peneliti adalah untuk mengetahui pengaruh lama fermentasi terhadap kadar flavonoid total pada ekstrak tape biji nangka (Artocarpus heterophylla Lamk.) yang dilakukan dengan alat spektrofotometer UV-Vis. Manfaat dari penelitian untuk menambah wawasan di bidang farmasi khususnya tentang ilmu kimia amami mengenai pengaruh lama fermentasi terhadap kadar flavonoid total pada ekstrak tape biji nangka (Artocarpus heterophylla Lamk.). Metode ekstraksi yang digunakan adalah metode maserasi dengan mengunakan pelarut etanol 96%. Identifikasi kualitatif mengunakan uji Shinoda, uji NaOH 10%, uji H2SO4 (pekat). Hasil uji kualitatif menunjukan sampel positif mengandung flavonoid. Kesimpulan pada hasil penelitian penetapan kadar flavonoid total yang terkandung dalam ekstrak tape biji nangka pada hari ke-0 sebesar 2,9146±0,0245 mgQE/gram ekstrak, pada hari ke-1 sebesar 3,3050±0,0240 mgQE/gram ekstrak, pada hari ke-2 sebesar 3,6829±0,0244 mgQE/gram ekstrak, dan pada hari ke-3 sebesar 4,0488±0,0244 mgQE/gram ekstrak.  Jackfruit seeds are less interest by the community (people) as food.  Jackfruit seeds containing flavonoid compounds where it can be used as a treatment.  The aim of the researchers was to determine the effect of fermentation time on total flavonoid concentration  in jackfruit fermented seed extracts with a UV-Vis spectrophotometer. The benefits of research to add insight in the field of pharmacy especially about chemistry of amami regarding effect of fermentation time on total flavonoid levels in jackfruit seed “tape” extract (Artocarpus heterophylla Lamk.). Extraction method used is the maceration method using 96% ethanol solvent. Qualitative identification using the Shinoda test, 10% NaOH test, and H2SO4 (concentrated) test. Qualitative test results showed a positive sample containing flavonoids. Conclusions on the results of the experiment  are jackfruit seed "tape" extract on day-0 was 2.9146±0.0245  mgQE/gram extract, on day-1 was 3.3050±0.0240 mgQE/gram extract, on day-2 was 3.68293±0.0244 mgQE/gram and on day-3 was 4.0488±0.024 mgQE /gram extract. The longer fermentation, total flavonoid concentration interest.  

Tris(4-(1-phenyl-1H-benzo[d]imidazole)phenyl)phosphine oxide for enhanced mobility and restricted traps in photovoltaic interlayers

2021 ◽  
Vol 9 (10) ◽  
pp. 3642-3651
Author(s):  
Jihyun Lim ◽  
Do-Yeong Choi ◽  
Woongsik Jang ◽  
Hyeon-Ho Choi ◽  
Yun-Hi Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Small Molecule ◽  
Phosphine Oxide ◽  
Organic Material ◽  
Perovskite Solar Cells ◽  
Effective Electron ◽  
Enhanced Mobility

Small molecule organic material, tris(4-(1-phenyl-1H-benzo[d]imidazole)phenyl)phosphine oxide (TIPO) was newly synthesised and introduced into an n-type interlayer in planar perovskite solar cells for effective electron transport.

scholarly journals Phosphine Oxide Derivative as a Passivating Agent to Enhance the Performance of Perovskite Solar Cells

2021 ◽  
Vol 4 (2) ◽  
pp. 1259-1268
Author(s):  
Albertus Adrian Sutanto ◽  
Cansu Igci ◽  
Hobeom Kim ◽  
Hiroyuki Kanda ◽  
Naoyuki Shibayama ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phosphine Oxide ◽  
Perovskite Solar Cells ◽  
Oxide Derivative ◽  
Passivating Agent

Bright photo- and triboluminescence of centrosymmetric Eu(III) and Tb(III) complexes with phosphine oxides containing azaheterocycles

2021 ◽  
Author(s):  
Yuliya Bryleva ◽  
Alexander Artem'ev ◽  
Ludmila Alexsandrovna Glinskaya ◽  
Marianna I Rakhmanova ◽  
Denis G. Samsonenko ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
Phosphine Oxides

Six centrosymmetric mononuclear Eu3+ and Tb3+ complexes of the type [LnL2(hfac)3] have been synthesized employing diphenyl(pyridin-2-yl)phosphine oxide (Ph2P(O)Py), diphenyl(pyridimin-2-yl)phosphine oxide (Ph2P(O)Pym), and diphenyl(pyrazin-2-yl)phosphine oxide (Ph2P(O)Pyr) as supporting ligands (L). The...

Sign in / Sign up

Export Citation Format

Share Document