this Reaction Name website (http://www.pmf.ukim.edu.mk/PMF/Chemistry/reactions/gattermann2.htm)
(http://www.pmf.ukim.edu.mk/PMF/Chemistry/reactions/gattermann2.htm). There are two more modification, viz. the Shah-Laiwalla and Hinkel modification.http://themerckindex.chemfinder.com/TheMerckIndex/NameReactions/TOC.asp (http://themerckindex.chemfinder.com/TheMerckIndex/NameReactions/TOC.asp)