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Table <strong>of</strong> Contents XLIX<br />

17.4.6.2.4.2.3 Of Heteroatoms .......................................................... 855<br />

17.4.6.2.4.2.3.1 Method 1: Of Bromine ............................................... 855<br />

17.4.6.2.4.2.3.2 Method 2: N-Oxidation .............................................. 855<br />

17.4.6.2.4.2.3.3 Method 3: Formation <strong>of</strong> an Annulated Benzazepine ................... 855<br />

17.4.6.3 3H-3-Benzazepines ....................................................... 856<br />

17.4.6.3.1 Synthesis by Ring-Closure Reactions ....................................... 856<br />

17.4.6.3.1.1 By Formation <strong>of</strong> Two N—C Bonds .......................................... 856<br />

17.4.6.3.1.1.1 Method 1: From 1,2-Phenylenediacetyl Chloride ....................... 856<br />

17.4.6.3.1.2 By Formation <strong>of</strong> Two C—C Bonds .......................................... 857<br />

17.4.6.3.1.2.1 Method 1: From Phthalaldehyde ...................................... 857<br />

17.4.6.3.1.2.1.1 Variation 1: From 1,2-Dibenzoylbenzene with N,N-Bis(cyanomethyl)isopropylamine<br />

.............................................. 857<br />

17.4.6.3.1.3 By Formation <strong>of</strong> One N—C Bond ........................................... 858<br />

17.4.6.3.1.3.1 Method 1: By Halogen Acid Induced Cyclization <strong>of</strong> Benzene-1,2diacetonitrile<br />

............................................. 858<br />

17.4.6.3.1.3.2 Method 2: Thermolysis <strong>of</strong> Vinyl Azides ................................ 858<br />

17.4.6.3.1.4 By Formation <strong>of</strong> One C—C Bond ........................................... 860<br />

17.4.6.3.1.4.1 Method 1: From Phenylacetimidates .................................. 860<br />

17.4.6.3.1.5 By Annulation to the Heterocyclic Ring .................................... 861<br />

17.4.6.3.1.5.1 Method 1: By [4+2] Cycloaddition <strong>of</strong> Methyl 2-Pyrone-5-carboxylate<br />

with Ethyl 1H-Azepine-1-Carboxylate ....................... 861<br />

17.4.6.3.2 Synthesis by Ring Transformation .......................................... 862<br />

17.4.6.3.2.1 By Ring Enlargement ..................................................... 862<br />

17.4.6.3.2.1.1 Method 1: From 2,3-Benzo-7-azabicyclo[2.2.1]hepta-2,5-dienes ........ 862<br />

17.4.6.3.2.1.2 Method 2: From Azirino[2,1-a]isoquinolines ........................... 862<br />

17.4.6.3.2.1.3 Method 3: From 2-(1a,2,7,7a-Tetrahydro-1H-naphtho[2,3-b]aziren-1-yl)-<br />

1H-isoindole-1,3(2H)-dione ................................ 863<br />

17.4.6.3.3 Aromatization ............................................................ 864<br />

17.4.6.3.3.1 Method 1: By Oxidation (Dehydrogenation) <strong>of</strong> 7,8-Dimethoxy-5-phenyl-<br />

1,3,4,5-tetrahydro-2H-3-benzazepin-2-one ................. 864<br />

17.4.6.3.4 Synthesis by Substituent Modification ..................................... 864<br />

17.4.6.3.4.1 Substitution <strong>of</strong> Existing Substituents ....................................... 864<br />

17.4.6.3.4.1.1 Of Hydrogen .............................................................. 864<br />

17.4.6.3.4.1.1.1 Method 1: Nitration <strong>of</strong> 1H-3-Benzazepin-2-amine ..................... 864<br />

17.4.6.3.4.1.2 Method 2: C1-Methylation <strong>of</strong> 2,7,8-Trimethoxy-1H-3-benzazepine ...... 865<br />

17.4.6.3.4.2 Of Heteroatoms .......................................................... 865<br />

17.4.6.3.4.2.1 Method 1: Debromination with Palladium on Charcoal ................. 865<br />

17.4.6.3.4.2.2 Method 2: Formation <strong>of</strong> 2-Ethoxy-7,8-dimethoxy-5-phenyl-1H-3benzazepine<br />

.............................................. 866<br />

17.4.6.3.4.2.3 Method 3: By ipso-Substitution <strong>of</strong> 2-Alkoxy Substituents ............... 866

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