Search results for: Tristan Schuh

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2,2′‐Bis(arylamino)‐1,1′‐biaryls as Building Blocks for the Synthesis of Dibenzo[d,f][1,3]diazepines, Dibenzo[d,f][1,3]diazepinones, and Dibenzo[c,e][1,2,7]thiadiazepine 6‐Oxides

Robert Thoran, Tristan Schuh, Philipp Holling, Florian Puls, more

European Journal of Organic Chemistry > 26 > 35 > n/a - n/a

The iron‐catalyzed oxidative C−C homocoupling of diarylamines affords 2,2′‐bis(arylamino)‐1,1′‐biaryls which represent crucial synthetic building blocks for an access to a range of seven‐membered heterocyclic ring systems. Reaction with paraformaldehyde, diphenyl carbonate, and diphenyl sulfite as efficient 1,1‐dielectrophiles led to dibenzo[d,f][1,3]diazepines, dibenzo[d,f][1,3]diazepinones, and...

article

Atroposelective Synthesis of 2,2′‐Bis(arylamino)‐1,1′‐biaryls by Oxidative Iron(III)‐ and Phosphoric Acid‐Catalyzed C−C Coupling of Diarylamines**

Raphael F. Fritsche, Tristan Schuh, Olga Kataeva, Hans‐Joachim Knölker

Chemistry – A European Journal > 29 > 6 > n/a - n/a

We describe an iron‐catalyzed asymmetric oxidative C−C coupling of diarylamines which proceeds at room temperature with air as final oxidant. Using hexadecafluorophthalocyanine‐iron(II) as catalyst in the presence of catalytic amounts of an axially chiral biaryl phosphoric acid, the resulting chiral 2,2′‐diamino‐1,1′‐biaryls are obtained in up to 90 % ee as confirmed by chiral HPLC. A detailed mechanism...

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Keywords

ASYMMETRIC CATALYSIS (1)
BIARYL COMPOUNDS (1)
C−H BOND ACTIVATION (1)
DIBENZO[C,E][1,2,7]THIADIAZEPINE 6-OXIDES (1)
DIBENZO[D,F][1,3]DIAZEPINES (1)
DIBENZO[D,F][1,3]DIAZEPINONES (1)
HETEROCYCLES (1)
IRON (1)
IRON CATALYSIS (1)
PHTHALOCYANINES (1)
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Search results for: Tristan Schuh

2,2′‐Bis(arylamino)‐1,1′‐biaryls as Building Blocks for the Synthesis of Dibenzo[d,f][1,3]diazepines, Dibenzo[d,f][1,3]diazepinones, and Dibenzo[c,e][1,2,7]thiadiazepine 6‐Oxides

Atroposelective Synthesis of 2,2′‐Bis(arylamino)‐1,1′‐biaryls by Oxidative Iron(III)‐ and Phosphoric Acid‐Catalyzed C−C Coupling of Diarylamines**

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