Results 21 to 30 of about 2,581 (118)

Intramolecular Phl=O mediated copper-catalyzed aziridination of unsaturated sulfamates: A new direct access to polysubstituted amines from simple homoallylic alcohols [PDF]

open access: yes, 2002
(Matrix presented) Olefinic sulfamates derived from primary and secondary alcohols undergo intramolecular copper-catalyzed aziridination in the presence of iodosylbenzene to afford novel bicyclic fused aziridines.
Leman, Loïc   +5 more
core   +1 more source

TiCl4 Induced Anti-Markovnikov Rearrangement

open access: yes, 2016
Stereoisomeric bicyclic tert-alcohols afforded identical ring-expansion products via cationic anti-Markovnikov rearrangement from perpendicular tert-cations into identical six-membered ring secondary cations by the treatment with TiCl4.
Mugio Nishizawa (2004031)   +2 more
core   +1 more source

Photochemical synthesis and functional transformations of bicyclic vinyl aziridines [PDF]

open access: yes, 2015
Aziridines, a class of organic compounds containing a three membered heterocycle with a nitrogen atom, are extremely valuable molecules in organic and medicinal chemistry.
Vale, João Rafael Campos do
core  

Action of alcohols on bicyclic terpene oxides communication 3. Acetals of 3-camphenilanecarboxaldehyde [PDF]

open access: yes, 1954
1. A study has been made of the reaction of camphene oxide with primary alcohols (ethyl, butyl, isobutyl and octyl) and a secondary alcohol (isopropyl) in presence of sulfuric acid.
Arbuzov B., Mukhamedova L.
core  

Influence of Carbocation Stability in the Gas Phase on Solvolytic Reactivity:  Beyond Bridgehead Derivatives

open access: yes, 2016
The intrinsic gas-phase stability of bicyclic secondary carbocations has been determined by Dissociative Proton Attachment of chlorides and alcohols, respectively.
Esther Quintanilla (3033876)   +5 more
core   +2 more sources

Study on the rearrangement of Camphor-derived alkyl [3.2.1]bicyclic alcohols to dimethyl alkyl [2.2.2]bicyclic octanes

open access: yes, 2015
[[abstract]]樟腦衍生物雙環[3.2.1]羥基酮與烷基鋰化物和葛林納試劑進行加成反應17得到雙環[3.2.1]雙醇化合物,再進行縮醛反應而生成乙醯醇產物。接著各類型的雙環[3.2.1]乙醯醇化合物在催化量的甲苯磺酸催化下生成樟腦分子衍生之雙環[2.2.2]重排產物。然後,此樟腦分子衍生之雙環[2.2.2]乙醯化合物溶於甲醇,再加入氫氧化鈉得到產物為樟腦分子衍生之雙環[2.2.2]二級醇化合物。再將樟腦分子衍生之雙環[2.2.2]二級醇化合物被氧化為樟腦分子衍生之雙環[2.2.2]酮化合物 ...
張之頤, Chang, Chih-Yi
core  

Action of alcohols on bicyclic terpene oxides communication 3. Acetals of 3-camphenilanecarboxaldehyde

open access: yes, 2020
1. A study has been made of the reaction of camphene oxide with primary alcohols (ethyl, butyl, isobutyl and octyl) and a secondary alcohol (isopropyl) in presence of sulfuric acid.
Arbuzov B., Mukhamedova L.
core  

Infrared Matrix Isolation and Theoretical Studies of Reactions of Ozone with Bicyclic Alkenes: α‑Pinene, Norbornene, and Norbornadiene

open access: yes, 2016
The reactions of ozone with three bicyclic alkenes, α-pinene, norbornene, and norbornadiene, were studied by low-temperature (14 K), argon matrix isolation infrared spectroscopy including 18O isotope-labeling studies.
Roger W. Kugel (1633654)   +1 more
core   +1 more source

Synthesis of Robalzotan, Ebalzotan, and Rotigotine Precursors via the Stereoselective Multienzymatic Cascade Reduction of α,β-Unsaturated Aldehydes

open access: yes, 2016
A stereoselective synthesis of bicyclic primary or secondary amines, based on tetralin or chroman structural moieties, is reported. These amines are precursors of important active pharmaceutical ingredients such as rotigotine (Neupro), robalzotan, and ...
Fabio Parmeggiani (691842)   +5 more
core   +1 more source

Organic Dye Photocatalyzed Synthesis of Functionalized Lactones and Lactams via a Cyclization-Alkynylation Cascade

open access: yes
An organic dye photocatalyzed lactonization-alkynylation of easily accessible homoallylic cesium oxalates using ethynylbenziodoxolone (EBX) reagents has been developed. The reaction gave access to valuable functionalized lactones and lactams in up to 88%
Cavalli, Diana, Waser, Jerome
core   +2 more sources

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