[...]... Properties Chemical Properties Alk ylation Nucleophilic Reactions Cycloaddition 11 0 11 0 11 0 11 1 11 1 11 1 11 2 11 2 11 2 11 2 11 3 11 3 11 3 11 3 11 3 3 1, 2-Benzisothiazoles, their 1- Oxides, and their 1, l-Dioxides Synthesis Reactions 11 4 11 4 11 5 4 1, 2-Benzisoselenazoleand 1, 2-Benzisotellurazole 11 6 5 2,l-Benzisothiazoles 11 6 11 7 11 7 6 Other Condensed Ring Systems incorporating Isothiazole Thieno[3,4-c]isothiazoles... Photochemistry Reactions of 2-Amino-thiazoles Reactions of Thiazolium Salts Reactions of Meso-ionic Thiazoles Miscellaneous 11 8 11 8 11 8 11 9 + C-C) 11 9 11 9 11 9 12 0 12 0 12 1 12 1 12 1 12 1 12 2 12 2 12 3 12 3 12 3 12 3 12 3 12 4 12 5 12 5 12 5 8 A'-Thiazolines Synthesis + C-S) Type B Syntheses (C-C-N Type E Syntheses (N-C-C-S + C) Type K Syntheses (C-C-N-C-S) Physical Properties Chemical Properties 12 5 12 5 12 5 12 6 12 6 12 6... Selenathiazoles 1, 2,3-0xathiazoles 1, 3,2-Oxathiazoles 1, 2,4-0xathiazoles 1, 3,4-Oxathiazoles 1, 3,5-Oxathiazoles 1, 2,4-Thiaselenazoles 18 Miscellaneous Ring Systems 1, 2,3,4-Thiatriazoles 1, 2,3,5-Dithiadiazoles 1, 3,2,4-Dioxathiazoles Part Ill Other Five-membered Ring Systems ByG K Boyd 16 1 16 1 16 1 16 2 16 2 16 2 16 3 16 3 16 3 16 3 16 4 16 4 16 4 16 5 16 5 16 5 16 5 16 6 16 6 16 6 16 6 16 6 16 7 16 7 16 7 1 Introduction 16 7 2 Reviews 16 8... Selenadiazoles 1, 2,3-Thiadiazoles Synthesis Physical Properties Chemical Properties 1, 2,3-Selenadiazoles 1, 2,4-Thiadiazoles Synthesis Physical Properties Chemical Properties 1, 2,4-Selenadiazoles 1, 3,4-Thiadiazoles Synthesis Physical Properties Chemical Properties Condensed 1, 3,4-Thiadiazoles 1, 3,4-Selenadiazoles 14 5 14 5 14 6 14 6 14 6 14 6 14 7 14 7 14 7 14 7 14 8 14 8 14 8 14 8 14 8 14 9 14 9 14 9 15 0 15 0 15 1 15 2 15 2 15 3 15 3 15 3... Thiazolor4.5-claze~inesTC,NS-C,Nl ~ L I 2 1 L a " > 13 9 13 9 13 9 13 9 14 0 14 0 14 0 14 0 14 1 14 1 14 2 14 2 14 2 14 2 14 2 14 3 14 3 14 3 14 3 14 5 14 5 14 5 14 5 14 5 Contents Xlll Structures comprising Two Five-membered Rings and One Six-membered Ring (5,5,6) 1, 2,4-Triazolo[3,4- blbenzothiazole [C3N3-C3NS-C6] Thiazolo[2,3-b]benzothiazoles [C3NS-C3NS-C6] Thiazolo[4,5-d]indazole [C3NS-C3N2-C6] Benzo[ 1, 2-d ; 3,4-d’]-bis-thiazoles... 15 3 15 3 15 4 15 5 15 5 15 5 15 6 15 7 15 8 15 8 15 8 15 9 15 9 16 0 16 0 xiv Heterocyclic Chemistry 1, 2,5-Thiadiazoles Synthesis Physical Properties 2 ,1, 3-Benzothiadiazoles and 2 ,1, 3-Benzoselenadiazoles Physical Properties Chemical Properties 1, 2,5-Thiadiazol0[3,4-g]benzofurazan 16 Dithiazoles and Diselenazoles 1, 2,3-Dithiazoles 1, 2,4-Dithiazoles 1, 3,2-Benzodithiazoles 1, 4,2-Dithiazoles 1, 2,4-Diselenazoles 17 Oxathiazoles... Reactions Isoindoles Other Heterocyclic Systems 16 8 16 8 16 8 17 2 17 4 17 4 17 7 17 8 17 8 18 1 18 4 18 4 18 7 19 2 19 3 xv Contents 4 Systems containing Two Identical Heteroatoms Dioxoles 1, 2-Dithioles 1, 3-Dithioles Tetrathiaf ulvalenes A Diselenole Pyrazoles Formation Reactions Indazoles Imidazoles Formation Reactions Benzimidazoles and other Annelated Imidazoles 19 3 19 3 19 4 19 7 19 9 200 20 1 2 01 2 01 204 205 205 205 208... Isothiazole-fused Thiophens and Related Systems 6 Thiophens Fused to Six-membered Aromatic Heterocyclic Rings Thiophen Analogues of Quinoline Thiophen Analogues of Isoquinoline 73 74 75 76 77 78 79 81 82 84 85 86 87 87 88 90 93 93 95 97 97 97 97 99 10 0 10 0 10 0 10 1 10 1 10 1 10 2 10 3 10 3 10 3 10 4 10 5 10 5 10 5 Heterocyclic Chemistry X Pyrimidine-fused Systems Pyrazine- and Triazine-fused Systems Miscellaneous... Systems 209 209 211 211 213 215 2 16 216 217 219 220 6 Systems containing Three Identical Heteroatoms Trithiolans 1, 2,3-Triazoles and Benzotriazoles 1, 2,4-Triazoles 220 220 220 222 7 Other Systems containing Three Heteroatoms Oxadiazoles 1, 2,3-0xadiazoles 1, 2,4-0xadiazoles 1, 2,5-0xadiazoles 1, 3,4-Oxadiazoles Thiadiazoles 1, 2,3-Thiadiazoles 1, 2,4-Thiadiazoles A 2 ,1, 3-Benzothiadiazole 1, 3,4-Thiadiazoles... 12 5 12 5 12 5 12 6 12 6 12 6 12 6 9 A3-Thiazolines 12 7 10 A4-Thiazolines Synthesis Reactions 12 7 12 7 12 7 11 Thiazolidines Synthesis Type A Syntheses (S-C-N + C-C) Type B Syntheses (C-C-N + C-S) + S) Type C Syntheses (C-C-N-C Type D Syntheses (C-C-S + C-N) Type E Syntheses (N-C-C-S + C) Type G Syntheses (C-C-S-C-N) Physical Properties 12 8 12 8 12 8 12 8 12 8 12 8 12 9 12 9 12 9 xii Heterocyclic Chemistry Chemical Properties . 10 6 10 7 10 7 10 7 10 7 10 8 10 8 10 9 10 9 10 9 10 9 11 0 11 0 11 0 11 1 11 1 11 1 11 2 11 2 11 2 11 2 11 3 11 3 11 3 11 3 11 3 11 4 11 4 11 5 11 6 11 6. 11 8 11 8 11 8 11 9 11 9 11 9 11 9 12 0 12 0 12 1 12 1 12 1 12 1 12 2 12 2 12 3 12 3 12 3 12 3 12 3 12 4 12 5 12 5 12 5 12 5 12 5 12 5 12 6 12 6 12 6 12 6