Results 171 to 180 of about 153,572 (317)
The Cycloaddition Reactions of Benzoylsulfene with Carbodiimides
, 1971 Otohiko Tsuge, Sumio Iwanami
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1,3-Dipolar cycloaddition of nitrosonaphthols to 3-aroylazindines. Novel syntheses of substituted naphtho[1,2-d]oxazoles and naphtho[2,1-d]oxazoles [PDF]
, 1970 J. William Lown, J. P. Moser
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Difluoro Carbenes: From Genuine Gold Complexes to Unprecedented Metallacyclic Reactivity
Angewandte Chemie, EarlyView.Thanks to chelating ligands and enhanced backdonation, genuine gold(I) difluorocarbenes persistent for hours at −30 °C or even 0 °C have been obtained. In addition to classical Fisher‐type electrophilic behavior, these complexes display unprecedented reactivity toward alkenes and 1,3‐dienes.
David Vesseur +6 more
wiley +2 more sources
Nitrone Ionization Potentials and Cycloaddition Regioselectivities
, 1977 K. N. Houk +6 more
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Studies on Heteroaromaticity. XXXVII. 1,3-Dipolar Cycloaddition of a Nitrilimine Possessing a Nitrofuran Ring [PDF]
, 1970 Tadashi Sasaki, Toshiyuki Yoshioka
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Angewandte Chemie, EarlyView.Der Einbau verschiedener Chalkogenatome (O, S, Se oder Te) in häufig verwendete Isochalkogenharnstoff‐Organokatalysatoren ermöglicht die Feinabstimmung ihrer Nucleophilie und Basizität. Kinetische und thermodynamische Deskriptoren für die molekularen Eigenschaften der Katalysatoren werden als Werkzeuge zur Vorhersage ihrer Effizienz eingeführt und in ...
Lotte Stockhammer +8 more
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Angewandte Chemie, EarlyView.A practical, stereoselective method for synthesizing tri‐ and tetra‐substituted 1,2‐fluoro‐borylalkenes and alkynes via defluorinative C–C coupling of CF3–arenes with organodiboron reagents is reported. Enabled by a Lewis base activator, products are formed in up to 94% yield and >98:2 Z/E selectivity.
José L. Rosario‐Collazo +3 more
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Stereoselectivity of Phenylcarbenoid of Zinc in Cycloaddition with Olefin [PDF]
, 1971 Jun Nishimura +3 more
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Angewandte Chemie, EarlyView.Iron‐catalyzed alkene metathesis has long remained elusive. This study identifies β‐hydride elimination from an iron metallacyclobutane as a key deactivation pathway in iron‐catalyzed alkene metathesis, through combined computational and experimental efforts.
Katarzyna Młodzikowska‐Pieńko +6 more
wiley +2 more sources
The Synthesis of 5-Aminoisoxazolidines by the 1,3-Dipolar Cycloaddition Reaction of Nitrones with Enamines [PDF]
, 1970 Yujiro Nomura +2 more
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