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Highly Convenient and Large Scale Synthesis of 5-chloroindole and its 3-substituted Analogues
Keetha, Laxminarayana,Palle, Sadanandam,Ramanatham, Vinodkumar,Khagga, Mukkanti,Chinnapillai, Rajendiran Korean Chemical Society 2011 대한화학회지 Vol.55 No.2
A large scale and commercially feasible synthesis of 5-chloroindole and its 3-substituted analogues has been described via a halogen - halogen exchange reaction from 5-bromoindole and its derivatives using cuprous chloride and dipolar aprotic solvent N-methyl-2-pyrrolidone in one pot with good yields. CuCl과 N-methyl-2-pyrrolidone을 이용하여 5-bromoindole을 halogen - halogen 교환반응을 통하여 5-chloroindole계 화합물을 합성하는 one-pot대량합성방법을 개발하였다.
Mathematics learning inequality among children of private and public schools
Parvez, Aquib,Laxminarayana, K. 서울대학교 교육연구소 2022 Asia Pacific Education Review Vol.23 No.2
In this study, we research the gap in average mathematics learning between the children of private and public schools at two points. We have divided them into two groups on the basis of the type of school they are attending or last attended. We first skim through their various background characteristics at these two points. We then explore these background characteristics and using the threefold Blinder–Oaxaca decomposition, we find that it is the difference in the average endowments between the two which consistently explains the gap in average performance between them. We also find the role of differential impact of the background characteristics on the average learning outcome of children on the first point. The most important and consistent contributor to the endowment effect is the schooling cost and the time allocation on studies. One striking result is the now significant contribution of the gap in average years of schooling which is worrying because these children are from the same age group. We conclude that with the average features and returns of the private school children, the gap in learning between them would have been removed. Moreover, the public school children would have performed better than the private school children.