Results 281 to 290 of about 538,570 (408)

Efficient and Stereoselective Synthesis of (Z)‐2‐Oxazolines by Transition Metal‐Free Cycloisomerization of Internal Propargylic Amides in Hexafluoroisopropanol (HFIP)

Asian Journal of Organic Chemistry, EarlyView.
(Z)‐2‐oxazolines are available in a stereoselective fashion by cyclization of propargylic amides with internal triple bonds in the presence of HCl generated in situ from hexafluoroisopropanol (HFIP) and TMSCl. Response surface methodology was crucial to optimize the reaction conditions.
Nicholas Jankowski, Norbert Krause
wiley   +1 more source

Pd-catalyzed deuteration of aryl halides with deuterium oxide. [PDF]

Nat Commun
Chen Y, Yuan R, Zheng T, Guo Q, Yao Y, Zhang L.   +5 more
europepmc   +1 more source

Synthesis of 1-Dioxides of 2-Aryl-3-benzyl-4-thiazolidones [PDF]

, 1961
B. K. Raval, J. J. Trivedi
openalex   +1 more source

Tuning Antiaromaticity Through Meso‐Substituent Orientation in Core‐Modified Isophlorins

Asian Journal of Organic Chemistry, EarlyView.
The antiaromaticity of dithiadioxaisophlorins is controlled by the steric bulkiness of meso‐substituents through their tilt angle relative to the macrocycle. Bulkier substituents maintain larger angles, preserving stronger antiaromaticity, while smaller groups facilitate π‐conjugation with the macrocycle, diminishing antiaromaticity.
Maika Isoda, Haruna Sugimura, Yusuke Honda, Ken‐ichi Yamashita   +3 more
wiley   +1 more source

Iodoarene Activation: Take a Leap Forward toward Green and Sustainable Transformations. [PDF]

Chem Rev
Dohi T, Elboray EE, Kikushima K, Morimoto K, Kita Y.   +4 more
europepmc   +1 more source

Studies on Ketene and its Derivatives. XIX. : A New Synthesis of 2-Alkyl(aryl)-substituted-6-methyl-(3H)-4-pyrimidone

, 1967
Tetsuzo Kato, Hiroshi Yamanaka, Tetsuichi Shibata   +2 more
openalex   +2 more sources

Possible Antituberculous Compounds. Part XIII. Preparation of Aryl Thiosemicarbazides and Thiosemicarbazones [PDF]

, 1962
V. S. Misra, R. S. Varma
openalex   +1 more source

Manipulation of Chemistry and Biology with Visible Light Using Tetra‐ortho‐Substituted Azobenzenes and Azonium Ions

Angewandte Chemie, EarlyView.
Tetra‐ortho‐Azobenzenes (TOABs) in broad daylight: in recent years, TOAB photoswitches became indispensable tools for all‐visible‐light manipulation of chemistry, biology and materials. This review explores their unique photochemical properties, design and synthetic approaches, offering support in choosing a TOAB for a given application.
Francesca Cardano, Rosa Márquez García, Wiktor Szymanski   +2 more
wiley   +1 more source

Doubly Stereogenic Sandwich Frameworks: Diastereomeric Metallobiscorroles. [PDF]

Inorg Chem
Torstensen K, Sixt F, Alemayehu AB, Settineri NS, Ghosh A.   +4 more
europepmc   +1 more source

Total Synthesis of Pyrrolnitrin. III. Synthesis of Ethyl 3-Aryl-5-methyl-2-pyrrolecarboxylate. (2)

, 1969
SUMINORI UMIO, KAZUO KARIYONE, KUNIHIKO TANAKA, TEIJI KISHIMOTO   +3 more
openalex   +2 more sources