𝔖 Bobbio Scriptorium
✦   LIBER   ✦

1,4-Cycloaddition of pyrazole with mesityl oxide; solid-state structure of bicyclic [C6H5Me3N2(OH)]Cl

✍ Scribed by Andrey Mayboroda; Gerd Rheinwald; Heinrich Lang

Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
118 KB
Volume
44
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

The synthesis of bicyclic 6-hydroxy-6,8,8-dimethyl-5-aza-1-azonia-bicyclo[3.3.0]octa-1,3-diene chloride, [C 6 H 5 Me 3 N 2 (OH)]Cl, (5) by the HCl-catalyzed 1,4-cycloaddition of pyrazole (1) with mesityl oxide (4) is described. A proposed mechanism for the formation of 5 will be given.

📜 SIMILAR VOLUMES

The Structure of N1-Hydroxylophine N3-Ox
The Structure of N1-Hydroxylophine N3-Oxide (=1-Hydroxy-2,4,5- triphenyl-1H-imidazole 3-Oxide) in the Solid State
✍ Ana Sánchez-Migallón; Antonio de la Hoz; Concepción López; Rosa M. Claramunt; Lo 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 German ⚖ 178 KB

## Abstract The crystal structure of __1‐hydroxy‐2,4,5‐triphenyl‐1__H__‐imidazole 3‐oxide__ (**1**) has been determined from laboratory X‐ray powder‐diffraction data. The two independent molecules in the asymmetric unit form chains __via__ OH⋅⋅⋅O hydrogen bonds related by a twofold screw axis. One

Silanediols Derived from Silanetriols. X
Silanediols Derived from Silanetriols. X-ray Crystal Structures of (2,4,6-Me3C6H2)N(SiMe3)Si(OSiMe3)(OH)2 and (2,4,6-Me3C6H2)N(SiMe3)Si(OSiMe2R)(OH)2 [R = CH2 (2-NH2-3,5-Me2C6H2)]
✍ Murugavel, Ramaswamy ;Voigt, Andreas ;Chandrasekhar, Vadapalli ;Roesky, Herbert 📂 Article 📅 1996 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 436 KB 👁 2 views

The silanediols RN(SiMe3)Si(OSiMe3)(0H)2 (R = 2,4,6-were characterized by means of mass, IR and NMR (lH and Me3C6H2 4, 2,6-Me2C6H3 5 , and 2,6-iPr2C6H3 6) were prepa-2gSi) spectroscopy. Additionally, the molecular structures of red by the reactions of the respective silanetriols RN(SiMe3)-4 and 7 we

Synthesis, Structural Characterisation a
Synthesis, Structural Characterisation and Reactivity of New Dinuclear Monocyclopentadienyl Imidoniobium and -tantalum Complexes − X-ray Crystal Structures of [{Nb(η5-C5H4SiMe3)Cl2}2(μ-1,4-NC6H4N)], [{Ta(η5-C5Me5)Cl2}2(μ-1,4-NC6H4N)] and [{Ta(η5-C5Me5)(CH2SiMe3)2}2(μ-1,4-NC6H4N)]
✍ Antonio Antiñolo; Iván Dorado; Mariano Fajardo; Andrés Garcés; Isabel López-Sol 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 254 KB 👁 1 views

## Abstract The preparation of a family of dinuclear monocyclopentadienyl imidoniobium and ‐tantalum complexes was achieved by two different synthetic routes. The diimido complexes [{M(Cp′)Cl~2~}~2~(μ‐1,__i__‐NC~6~H~4~N)] [Cp′ = η^5^‐C~5~H~4~SiMe~3~, M = Nb, __i__ = 4 (1); Cp′ = η^5^‐C~5~H~4~SiMe~3