Results 91 to 100 of about 35,698 (262)
A heterobimetallic tetrahedron from a linear platinum(II)-bis(acetylide) metalloligand
Beilstein Journal of Organic Chemistry, 2020 Employing 4-ethynylaniline as a simple organic ligand we were able to prepare the stable trans-bis(acetylide)platinum(II) complex [Pt(L1)2(PBu3)2] as a linear metalloligand.
Matthias Hardy +2 more
doaj +1 more source
Synthesis of Simplified Azasordarin Analogs as Potential Antifungal Agents [PDF]
, 2019 A new series of simplified azasordarin analogs was synthesized using as key steps a Diels–Alder reaction to generate a highly substituted bicyclo[2.2.1]heptane core, followed by a subsequent nitrile alkylation.
Dockendorff, Chris, Wu, Yibiao
core +4 more sources
Asymmetric Reduction of Unactivated Alkenes
Chemistry – A European Journal, EarlyView.Unactivated alkenes rank among the most inert functional groups in synthesis and their selective reduction remains challenging. This Review charts the evolution from classical metal‐catalyzed hydrogenation to radical hydrogen atom transfer (HAT) and emerging biocatalytic concepts, highlighting how complementary mechanistic strategies, including the ...
Nico D. Fessner +3 more
wiley +1 more source
Synthesis of phosphatidylcholine analogs with an alkyl group at C1 or C3 of the glycerol moiety.
Journal of Lipid Research, 1985 The syntheses of 1,2-di-(O-hexadecyl)-rac-glycero-3-phosphocholines containing a methyl group at either C1 or C3 of the glycerol moiety are described. The methyl group was introduced at C1 in a synthetic scheme beginning with the hydroxylation of methyl ...
N M Witzke, R Bittman
doaj +1 more source
Synthesis of spiroacetals using functionalised titanium carbenoids [PDF]
, 2008 Alkylidenation of lactones with functionalised titanium carbenoid reagents (Schrock carbenes) followed by acid-induced cyclisation of the resulting enol ethers constitutes a new method for the preparation of [4.4], [4.5] and [5.5] spiroacetals (1,6 ...
Aho +52 more
core +1 more source
Chemistry – A European Journal, EarlyView.In situ phenoxide formation at the benzene terminus triggers room‐temperature conversion of thia[6]helicene S,S‐dioxides to coronene. The solubility contrast drives product precipitation, enabling isolation by simple filtration. This pericyclic annulation between the helical termini provides direct access to coronene‐type planar architectures ...
Kaito Seino, Takashi Murase
wiley +1 more source
A Practical Method for the Stereochemical Analysis of Acyclic Terpenoid Carbonyl Compounds
CHIMIA, 1989 The stereoisomeric composition of acyclic terpene aldehydes and ketones can be assayed by derivatization with L(+)-diisopropyl tartrate and separation of the ensuing acetal diastereomers by gas chromatography.
Andreas Knierzinger +3 more
doaj +1 more source
Dihydroquinazolinones by Titanocene‐Catalyzed Reductive Radical Addition to Quinazolinones
Chemistry – A European Journal, EarlyView.Tri‐ and tetracyclic dihydroquinazolinones or quinazolinones by titanocene catalysis: A highly diastereoselective and efficient reductive radical addition to quinazolinones enables an unprecedented entry to pharmaceutically relevant dihydroquinazolinones by avoiding the interception of radical intermediates prior to the slow radical addition.
Thomas Heinrichs +5 more
wiley +1 more source
Тонкие химические технологии, 2011 Methods for resolution (splitting) of racemic myo-inositol derivatives into optical antipods via formation of diastereomeric compounds with carbohydrates are reviewed.
A. E. Stepanov, V. I. Shvets
doaj
Preparation, Characterization and Reactivity of (3-Methylpentadienyl)iron(1+) Cations [PDF]
, 2007 The title cations (9 and 12) were prepared by dehydration of (3-methyl-2,4-pentadien-1-ol)Fe(CO)2L+ complexes. The structure of the (CO)2PPh3-ligated 12 was determined by single-crystal X-ray analysis. Reaction of carbon and heteroatom nucleophiles to (3-
Bennett, Dennis W +5 more
core +1 more source