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baeyer emmerling indole synthesis wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 reaction mechanism 2 see also 3 references toggle the table of contents baeyer emmerling indole synthesis 5 languages deutsch فارسی nederlands தமிழ் yorùbá edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikimedia commons wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia syntheses in organic chemistry baeyer emmerling indole synthesis named after adolf von baeyer adolph emmerling reaction type ring forming reaction baeyer emmerling indole synthesis is a method for synthesizing indole from a substituted ortho nitrocinnamic acid and iron powder in strongly basic solution 1 2 this reaction was discovered by adolf von baeyer and adolph emmerling in 1869 3 4 baeyer emmerling indole synthesis reaction mechanism edit the reaction of iron powder with o nitrocinnamic acid reduces the nitro group to a nitroso the nitrogen then condenses with a carbon on the alkene chain with loss of a molecule of water to form a ring decarboxylation gives indole baeyer emmerling indole reaction mechanism see also edit baeyer drewsen indigo synthesis references edit bayer a emmerling a 1869 synthese des indoles synthesis of indoles berichte der deutschen chemischen gesellschaft 2 1 679 682 doi 10 1002 cber 186900201268 baeyer 5 archived 2007 08 16 at the wayback machine pmf ukim edu mk 1997 07 30 retrieved on 2014 01 10 chamberlain joseph scudder 1921 a textbook of organic chemistry blakiston p 874 lockyer sir norman 1881 indigo and its artificial production pdf nature 24 610 227 231 bibcode 1881natur 24 227h doi 10 1038 024227c0 s2cid 4100142 retrieved from https en wikipedia org w index php title baeyer emmerling_indole_synthesis oldid 1375375722 categories indole forming reactions organic reactions name reactions hidden categories articles with short description short description matches wikidata webarchive template wayback links this page was last edited on 17 september 2026 at 12 34 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents baeyer emmerling indole synthesis 5 languages add topic