Substituent effects on the carbon-13 NMR chemical shifts of cyclopropyl carbons in p-substituted(cis- and trans-2-chlorocyclopropyl)benzenes.
スポンサーリンク
概要
- 論文の詳細を見る
Carbon-13 chemical shifts have been measured for the cyclopropyl carbon atoms of twenty one <I>p</I>- substituted (<I>cis</I>- and <I>trans</I>-2-chlorocyclopropyl)benzenes. The substituent induced chemical shifts (SCS) for the trans derivatives are shifted down field by electron-acceptor substituents and upfield by electron-donating substituents (normal SCS). This SCS trend is the same as those observed for the <I>p</I>-substituted cyclopropylbenzenes, while the SCS range is small because of the decreased polarization of C-1–C-2 bonding due to the attached chlorine atom. For the cis derivatives, SCS for C-1 and C-3(CH<SUB>2</SUB>) carbons were also normal, while no measurable SCS was observed for C-2(CCl). The SCS well fitted with the LSFE equation, indicating that the SCS were controlled mainly by a polar effect, except for C-2(CCl, <I>cis</I>).
- 公益社団法人 日本化学会の論文
著者
-
Kusuyama Yoshiaki
Department Of Chemistry Faculty Of Education Wakayama University
-
Hasegawa Takeshi
Department Of Chemistry Graduate School Of Science And Engineering Tokyo Institute Of Technology
-
Kagosaku Tamami
Department of Chemistry, Faculty of Education, Wakayama University
関連論文
- Hepatic fibrosis in a twin with Down syndrome with transient abnormal myelopoiesis : a possible association with the activation of hepatic stellate cells
- Novel Solid-State 8H^+-Heteropolyacid : Synthesis and Molecular Structure of a Free-Acid Form of a Dawson-Type Sandwich Complex, [Ti_2{P_2W_O_(OH_2)_2}_2]^
- Small bowel strangulation caused by parasitic peritoneal strand
- Tetrameric, Tri-Titanium(IV)-Substituted Polyoxometalates with an α-Dawson Substructure as Soluble Metal Oxide Analogues : Synthesis and Molecular Structure of Three Giant "Tetrapods" Encapsulating Different Anions (Br^-, I^-, and NO_3^-)
- Synthesis, Characterization and Crystal Structure of the Water-Soluble, All-Inorganic Composition, A,β-Keggin Triniobium(V)-Substituted Polyoxotungstate
- Experimental Optimization of p-Polarized MAIR Spectrometry Performed on a Fourier Transform Infrared Spectrometer
- REM Sleep Components Predict the Response to Initial Treatment of Infantile Spasms
- Solvolysis of 1-[trans-2-(m- or p-Substituted Phenyl)cyclopropyl]-1-methylethyl p-Nitrobenzoates^
- Synthesis of a New Pd(II) Complex with One hfac-O, O' and One hfac-Monoxime-C, N as Ligands; Unexpected C-O Bond Formation between C^3-Bonded hfac and N-Bonded Monoxime
- Video analysis of gross body movements during sleep
- Amino acid release from the rat oral pontine reticular nucleus across the sleep-wakefulness cycle
- Systemic growth hormone corrects sleep disturbance in Smith-Magenis syndrome
- Disturbance of phasic chin muscle activity during rapid-eye-movement sleep
- Sleep duration of young children is affected by nocturnal sleep onset time
- Quantitative analysis of paradoxical inward rib cage movement during sleep in children
- IV G8 Muscle activity during non-REM sleep in patients with infantile spasms.
- II G1 Convulsive episodes in patients with group A xeroderma pigmentosum
- Cerebellopontine Angle Epidermoid Tumor Extending into the Upper Cervical Spinal Canal : Case Report
- A Close-packed, Highly Insulating Organic Thin Monolayer on Si(111)
- Gravity structure of Akan composite caldera, eastern Hokkaido, Japan : Application of lake water corrections
- Dandy-Walker Syndrome Successfully Treated With Cystoperitoneal Shunting : Case Report
- The eruption history and silicic magma systems of caldera-forming eruptions in eastern Hokkaido, Japan
- Synthesis and Spectroscopic Characterization of a Dawson Trivanadium-Substituted Polyoxotungstate-Supported {(Cp Rh)_2}^ Complex; (Bu^n_4N)_5 [(Cp Rh)_2 P_2W_V_3O_]
- Substituent Effects in the Solvolysis of p-(2-Substituted Cyclopropyl)-.ALPHA.-Methylbenzyl Chlorides.
- The sulfuranyl radical structure and reactions of o-(thio)benzoyloxyl radicals formed by the decomposition of t-butyl o-(thio)-perbenzoates studied by 1H and 13C CIDNP and 17O NMR.
- Substituent effects on the carbon-13 NMR chemical shifts of cyclopropyl carbons in p-substituted(cis- and trans-2-chlorocyclopropyl)benzenes.
- Substituent effects in the ionization of trans-2-substituted cyclopropanecarboxylic acids.
- The Estimation of the Electronic Effects of Cyclopropyl and 2,2-Dichlorocyclopropyl Groups