Sitting Out the Halogen Dance. Room-Temperature Formation of 2,2′-Dilithio-1,1′-dibromoferrocene. TMEDA and Related Lithium Complexes: A Synthetic Route to Multiply Substituted Ferrocenes

2021 ◽  
Author(s):  
Ian R. Butler
Keyword(s):  
Room Temperature ◽  
Synthetic Route ◽  
Lithium Complexes

A 35-year-old mystery solved: a facile synthetic route and structural confirmation of tetrachlorobis(diethyl ether)tungsten(IV)

2021 ◽  
Vol 77 (4) ◽  
Author(s):  
Thomas E. Shaw ◽  
Alfred P. Sattelberger ◽  
Titel Jurca
Keyword(s):  
Crystal Structure ◽  
Diethyl Ether ◽  
Thermal Instability ◽  
Room Temperature ◽  
Surface Characteristics ◽  
Hirshfeld Surface ◽  
Asymmetric Unit ◽  
Synthetic Route ◽  
X Ray ◽  
Elemental Analyses

The true identity of the diethyl ether adduct of tungsten(IV) chloride, WCl4(Et2O) x , has been in doubt since 1985. Initially postulated as the bis-adduct, WCl4(Et2O)2, questions arose when elemental analyses were more in line with a mono-ether adduct, viz. WCl4(Et2O). It was proposed that this was due to the thermal instability of the bis-adduct. Here, we report the room-temperature X-ray crystal structure and Hirshfeld surface characteristics of trans-tetrachloridobis(diethyl ether)tungsten(IV), trans-WCl4(Et2O)2 or trans-[WCl4(C4H10O)2]. The compound crystallizes, with half of the molecule in the asymmetric unit, in the centrosymmetric space group P21/n. The W—O distance is 2.070 (2) Å, while the W—Cl distances are 2.3586 (10) and 2.3554 (10) Å.

scholarly journals Environmentally friendly and facile synthesis of Rh nanoparticles at room temperature by alkaline ethanol solution and their application for ethanol electrooxidation

RSC Advances ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 3161-3169 ◽  
Author(s):  
Fuhai Li ◽  
Hanqin Weng ◽  
Yun Shang ◽  
Zuoming Ding ◽  
Zheng Yang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Environmentally Friendly ◽  
Ethanol Solution ◽  
Ethanol Electrooxidation ◽  
Synthetic Route ◽  
Facile Synthesis

A facile, fact and green synthetic route was developed to prepare Rh nanoparticles at room temperature.

The Synthesis of Aluminum Nitride from Aluminum Hydride

1988 ◽  
Vol 121 ◽  
Author(s):  
Atsushi Ochi ◽  
H. KENT BOWEN ◽  
Wendell E. Rhine
Keyword(s):  
Aluminum Nitride ◽  
Room Temperature ◽  
Condensation Reaction ◽  
Aluminum Hydride ◽  
White Powder ◽  
Synthetic Route ◽  
Stoichiometric Amount

ABSTRACTThe reaction between ammonia and aluminum hydride (AIH3) was investigated as a possible synthetic route to aluminum nitride (AIN), using tetrahydromran (THF) as the solvent. When an excess of ammonia was employed, a white powder was obtained which was converted to AIN by calcination. However, when a stoichiometric amount of ammonia was used, a soluble intermediate was obtained. This intermediate polymerized slowly at room temperature via a condensation reaction involving the elimination of hydrogen to give a gel that could be converted to AIN.

A Room Temperature Synthetic Route to Mn3O4 Nanoplates

2011 ◽  
Vol 11 (3) ◽  
pp. 2533-2536 ◽  
Author(s):  
Rui Song ◽  
Hongming Yuan ◽  
Yan Chen ◽  
Shouhua Feng
Keyword(s):  
Room Temperature ◽  
Synthetic Route

The synthesis of narrow-band red-emitting SrLiAl3N4:Eu2+phosphor and improvement of its luminescence properties

2016 ◽  
Vol 4 (30) ◽  
pp. 7332-7338 ◽  
Author(s):  
Dianpeng Cui ◽  
Qianchuan Xiang ◽  
Zhen Song ◽  
Zhiguo Xia ◽  
Quanlin Liu
Keyword(s):  
Room Temperature ◽  
Narrow Band ◽  
Critical Role ◽  
Luminescence Properties ◽  
Synthetic Route ◽  
Temperature Dependent

We have provided and optimized a synthetic route to SrLiAl3N4phosphor. BaF2flux plays a critical role to improve room temperature and temperature-dependent spectra due to the enhancement of crystallinity.

Controlled room-temperature reduction of YBa2Cu3O7−x: A synthetic route to metastable superconducting phases

1989 ◽  
Vol 7 (12) ◽  
pp. 411-414 ◽  
Author(s):  
Michael Schwartz ◽  
Michael Rappaport ◽  
Gary Hodes ◽  
Shimon Reich ◽  
David Cahen
Keyword(s):  
Room Temperature ◽  
Synthetic Route ◽  
Temperature Reduction ◽  
Superconducting Phases

SnO2 NANOCRYSTALLITE: NOVEL SYNTHETIC ROUTE FROM DEEP EUTECTIC SOLVENT AND LITHIUM STORAGE PERFORMANCE

2011 ◽  
Vol 04 (04) ◽  
pp. 377-381 ◽  
Author(s):  
C. D. GU ◽  
Y. J. MAI ◽  
J. P. ZHOU ◽  
J. P. TU
Keyword(s):  
Room Temperature ◽  
Pore Diameter ◽  
Deep Eutectic Solvent ◽  
Lithium Ion ◽  
Homogeneous Precipitation ◽  
Synthetic Route ◽  
Lithium Storage ◽  
Capacity Retention ◽  
Storage Performance ◽  
Initial Charge

A new synthetic route to ~4 nm grain-sized SnO 2 was proposed which involved a homogeneous precipitation in a deep eutectic solvent (DES) at room temperature. The white SnO 2 precipitate was obtained from SnCl 2 ⋅ 2 H 2 O dissolved DES by injecting slow drop-wise H 4 N 2 ⋅ H 2 O under stirring. The as-prepared nanocrystalline SnO 2 has a Brunauer–Emmett–Teller surface area of 65.12m2/g with an average Barretl–Joyner–Halenda pore diameter of 3.5 nm. As anode for lithium ion batteries, the nanocrystalline SnO 2 electrode delivered an initial charge capacity as high as 1045 mAh/g and its capacity retention is 58% after 30 cycles.

Synthesis of PEG-supported organotrifluoroborates and their applications in palladium-catalyzed homo-coupling reactions

2015 ◽  
Vol 44 (10) ◽  
pp. 4759-4764
Author(s):  
Li Yong ◽  
Min-Liang Yao ◽  
David W. Blevins ◽  
George W. Kabalka
Keyword(s):  
Room Temperature ◽  
Water Soluble ◽  
Coupling Reactions ◽  
Synthetic Route ◽  
Palladium Catalyzed

A general synthetic route to water-soluble PEG-supported organotrifluoroborates has been developed. In the presence of air and catalytic amounts of Pd(OAc)2, the PEG-supported organotrifluoroborates undergo homo-coupling reactions smoothly at room temperature.

Chemical development of the vasopressin receptor 2 antagonist SR-121463

2001 ◽  
Vol 73 (9) ◽  
pp. 1401-1409 ◽  
Author(s):  
István Hermecz ◽  
Andrea Sánta-Csutor ◽  
Csaba Gönczi ◽  
Gergely Héja ◽  
Éva Csikós ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Ring Opening ◽  
Large Scale ◽  
Room Temperature ◽  
Sulfonyl Chloride ◽  
Synthetic Route ◽  
One Pot ◽  
Sequential Transformation ◽  
Orally Active ◽  
Methylene Group

A facile convergent total synthesis of the selective, potent, and orally active V2 non-peptide antagonist, SR-121463, was developed by modification of the discovery route. One of the late intermediates, the sulfonyl chloride 1, was synthesized from 3-hydroxybenzoic acid (19) by regioselective sulfonation, O-methylation and amidation in four steps. Another late intermediate, indolin-2-one 2, was prepared from p-phenetidine (8) through the indolin-2-one 16, where the cyclohexanone moiety of 27 was introduced into the active 3-methylene group of 16 by sequential transformation using methyl acrylate and KOtBu. After formation of the cyclic ketal moiety of 13, its ring-opening was achieved by using NaBH4 in the presence of CCl3COOH. The morpholino group in 2 was introduced in accordance with the discovery approach, starting from the 2-hydroxyethoxy derivative 14 through the tosyloxy derivative 15 with morpholine in a one-pot reaction. In this way, the indolin-2-one 2 was synthesized from 8 in six steps. Finally, acylation of the indolin-2-one 2 was achieved with the sulfonyl chloride 1 in the presence of KOtBu in dimethyl sulfoxide (DMSO) at room temperature. This synthetic route proved to be applicable for the large-scale synthesis of SR-121463.

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