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Correction: An unprecedented tandem synthesis of fluorescent coumarin-fused pyrimidines via copper-catalyzed cross-dehydrogenative C(sp3)–N bond coupling
Santosh
Kumari
a,
S. M.
Abdul Shakoor
a,
Sadhika
Khullar
b,
Sanjay K.
Mandal
c and
Rajeev
Sakhuja
*a
aDepartment of Chemistry, Birla Institute of Technology & Science, Pilani, Rajasthan 333031, India. E-mail: sakhuja.rajeev@gmail.com
bDepartment of Chemistry, D.A.V. University, Jalandhar-Pathankot National Highway, Jalandhar-144012, Punjab, India
cDepartment of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S. Nagar, Manuali P.O., Punjab 140306, India
First published on 1st November 2018
Abstract
Correction for ‘An unprecedented tandem synthesis of fluorescent coumarin-fused pyrimidines via copper-catalyzed cross-dehydrogenative C(sp3)–N bond coupling’ by Santosh Kumari et al., Org. Biomol. Chem., 2018, 16, 3220–3228.
The authors regret that the structure of the final products 3 proposed in the paper based on detailed spectroscopic analysis was slightly different (another isomeric form) from the structure determined from a crystal structure determination for compound 3a reported in the paper (see below). The experimental data (1H NMR, 13C NMR and HRMS) documented for all the products is valid for both the possible structures and either structure is mechanistically plausible. The revised structure assignment is based on the assumption that the crystal structure determination for compound 3a is representative for all compounds.
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| Scheme 6 Plausible mechanism. | ||
Furthermore, the compound names provided in the Experimental section are incorrect. For instance, 1-benzyl-2-phenyl-1,2-dihydro-5H-chromeno[4,3-d]pyrimidin-5-one (3a) should be replaced by 3-benzyl-2-phenyl-2,3-dihydro-5H-chromeno[4,3-d]pyrimidin-5-one (3a).
The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.
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