Reagents, Reaction Mechanisms & Named Reactions
177 questions in this chapter, page 4 of 4.
Study loop for Reagents, Reaction Mechanisms & Named Reactions
1. Practise the PYQsPrevious-year questions, with answers
Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0239 · The major product formed in the following reaction sequence is: 1. Me2C(OMe)2, TsOH (cat.) 2. BH3, THF 3. H3O+ · DEC 2014
ABC26OR0243 · The products A and B in the following reaction sequence are: LDA A [CuCl, DMF-H2O]PdCl2, O2 B [2. H3O^+]1. NaOEt · DEC 2014
ABC26OR0244 · The products A and B in the following reaction sequence are: A [THF, EtOH]SmI2 B · DEC 2014
ABC26OR0253 · The products A and B in the following reaction sequence are 2. ICH2CH2CH2Cl A [2. H3O+]1. MeMgBr, Et2O B · DEC 2014
ABC26OR0257 · The products A and B in the following reaction sequence are 18-crown-6, rt. A B · JUNE 2015
ABC26OR0259 · The major product formed in following reaction sequence is Pd(OAc)2, PPh3, Et3N · JUNE 2015
ABC26OR0261 · The major product formed in following reaction sequence is h nu, vycor filter, ClCH2CH2Cl, 80°C · JUNE 2015
ABC26OR0263 · Structure of the major product in the following synthetic sequence is 1. CuI 2. SeO2 · JUNE 2015
ABC26OR0266 · The major product formed in the following reaction sequence is: · DEC 2015
ABC26OR0269 · The major structures of A and B in the following reaction sequence are · DEC 2015
ABC26OR0272 · The major structures of A and B in the following reaction sequence are A B · DEC 2015
ABC26OR0275 · The major product formed in the following reaction sequence is: · DEC 2015
ABC26OR0276 · The major structures of A and B in the following reaction sequence are [Me2NH]HCHO A B · DEC 2015
ABC26OR0279 · The major structures of A and B in the following reaction sequence are PhCOOH, DCC A [then alumina]PDC, CH2Cl2 B · DEC 2015
ABC26OR0283 · The major structures of A and B in the following reaction sequence are A [(ii) H3O+ (iii) Zn-HCl](i) t-BuONO, NaOEt B · DEC 2015 self-practice
ABC26OR0284 · The major product formed in the following reaction sequence is: · DEC 2015 self-practice
ABC26OR0290 · The major product formed in the following reaction sequence is: 3. H3O+ · JUNE 2016
ABC26OR0330 · The major product formed in the sodium ethoxide mediated reaction between benzophenone and chloroacetate is · JUNE 2017
ABC26OR0338 · The correct combination of reagents A and B to effect the following transformations are B A · JUNE 2017
ABC26OR0387 · The correct sequence of reagents to be used for the following conversion is- · DEC 2018
ABC26OR0388 · Both 1-chloro-1-phenylpropan-2-one and 1-chloro-3-phenylpropan-2-one give same product A when heated in presence of NaOMe. The product A is · DEC 2018
ABC26OR0404 · The major product in A and B in the following reaction sequence is: A POCl3 (excess) B · 2019
ABC26OR0430 · The major product A and the byproducts B formed in the following reaction are 2. P(OMe)3, heat A + B · DEC 2019
ABC26OR0436 · In the following transformation, the enantiomerically pure lactone A is A B · DEC 2019
ABC26OR0441 · The major product in the following reaction sequence is · DEC 2019
Reduction Reagents
ABC26OR0262 · The structures of A and B in the following reaction sequence are 2. heat A [2. H3O^+]1. LiAlH4 B · JUNE 2015
ABC26OR0382 · Correct sequence of reagents to be used for the following conversion is- · DEC 2018