نتایج جستجو برای: isopropyl 2

تعداد نتایج: 2528304  

Journal: :Organic syntheses; an annual publication of satisfactory methods for the preparation of organic chemicals 2011
Hubert Muchalski Amanda B Doody Timothy L Troyer Jeffrey N Johnston

HAZARD WARNING TO USERS The procedures on the orgsyn.org website are intended for use only by persons with prior training in the field of organic chemistry. In the checking and editing of these procedures, every effort has been made to identify potentially hazardous steps and to eliminate as much as possible the handling of potentially dangerous materials; safety precautions have been inserted ...

2012
Graham Smith

The title compound, C17H16Br2O3, which is a restricted commercial acaricide (common name bromo-propyl-ate), has two independent and conformationally similar mol-ecules in the asymmetric unit [dihedral angles between the planes of the two phenyl rings = 68.7 (4) and 77.4 (5)°]. The C atoms of the isopropyl group of one of the mol-ecules are disordered over two sites with occupancies of 0.638 (16...

2010
Ye-Fei Nan Qun-Zheng Zhang Xu-Ji Shen Xin-Feng Zhao Xiao-Hui Zheng

The title compound, C(12)H(16)O(5), is a derivative of β-(3,4-dihydroxy-phen-yl)-α-hydr-oxy acid. The crystal packing is stabilized by inter-molecular O-H⋯O hydrogen bonds.

2010
Madhukar Hemamalini Hoong-Kun Fun

The mol-ecular structure of the title compound, C(8)H(12)N(2)O, indicates that 2-isopropyl-6-methyl-pyrimidin-4-ol (the enol-form) undergoes an enol-to-keto tautomerism during the crystallization process. The pyrimidin-4(3H)-one group is essentially planar, with a maximum deviation of 0.081 (1) Å for the O atom. In the crystal structure, symmetry-related mol-ecules are linked into centrosymmeti...

Journal: :Acta Crystallographica Section E Structure Reports Online 2008

2010
Mao-Sen Yuan Zhi-peng Li Qi Wang

In the title compound, C(11)H(14)ClNO, the herbicide propachlor, there are significant differences between the three N-C bond lengths [N-C(carbon-yl) = 1.354 (3) Å, N-C(phen-yl) = 1.444 (2) Å and N-C(isoprop-yl) = 1.496 (3) Å], indicating the presence of π delocalization involving the carbonyl group. The N atom lies 0.074 (2) Å from the plane defined by the the three bonded C atoms.

2009
Yu Chen Li-hua Guo Wei Song Jing Zhang Dan-bi Tian

In the title compound, C(11)H(14)N(2)O(3), the bond lengths and angles are within normal ranges. Weak inter-molecular N-H⋯O inter-actions link the mol-ecules into chains along the a axis. A non-classical intra-molecular C-H⋯O inter-action (nitro O atom and a H atom of the nearest methyl group) is found, forming a six-membered ring with a twisted conformation. This six-membered ring has a twiste...

2012
Jadupati Malakar Amit Kumar Nayak Aalok Basu

Ondansetron HCl delivery through oral route suffers due to its low bioavailability due to first-pass metabolism. Therefore, the microemulsion-based transdermal delivery may be a better substitute for it. The pseudoternary phase diagrams were constructed to determine compositions of microemulsions, and ondansetron HCl microemulsions for transdermal delivery were developed using isopropyl myrista...

Journal: :Journal of organometallic chemistry 2006
Stéphanie Schouteeten Olivia R Allen Aireal D Haley Grace L Ong Gavin D Jones David A Vicic

Reaction of isopropyl[(2-pyridyl)alkyl]amines such as N-isopropyl-N-2-methylpyridine or N-isopropyl-N-2-ethylpyridine with aqueous solutions of NaAuCl(4) led to the formation of [LAuCl(2)][AuCl(4)] in low yields, where L = pyridyl amine bound to gold in a bidentate fashion. Reaction of 2-(3,5-diphenyl-1H-pyrrol-2-yl)pyridine with aqueous NaAuCl(4), however, proceeded with formal loss of HCl and...

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