Correction

This article refers to:

Sulfonic acid-supported vanillin/bis indolylmethane-functionalized Fe3O4@SiO2-propyl NPs as green, effective, and magnetically recoverable catalysts for the synthesis of imidazoquinazolines and thiazoquinazolines

Article title: Sulfonic acid supported vanillin/bis indolylmethane-functionallized Fe3O4@SiO2-Propyl NPs as green, effective and magnetically recoverable catalyst for the synthesis of imidazoquinazolines and thiazoquinazolines

Authors: Leila Zare Fekri, Zahra Mohammadi and Atefeh Alijani

Journal: Journal of Sulfur Chemistry

DOI: https://doi.org/10.1080/17415993.2023.2253345

This article was originally published with errors.

This article was initially published incorrectly with an incorrect title. During the time of publication, the title of the article was

Sulfonic acid supported vanillin/bis indolylmethane-functionallized Fe3O4@SiO2-Propyl NPs as green, effective and magnetically recoverable catalyst for the synthesis of imidazoquinazolines imidazoquinazolines and thiazoquinazolines

The title is now corrected in online version to

Sulfonic acid supported vanillin/bis indolylmethane-functionallized Fe3O4@SiO2-Propyl NPs as green, effective and magnetically recoverable catalyst for the synthesis of imidazoquinazolines and thiazoquinazolines

In addition, the author has added some text to the section heading 4.6. General procedure for the synthesis of imidazoquinazolines. The text is provided below.

Thiazoquinazoline (6j)

¹H NMR (DMSO-d₆, 300MHz) δ 1.07 (s, 3H), 1.09 (s, 3H), 2.07-2.29 (brs, 4H), 5.20 (s, 1H), 7.59 (s, 1H), 7.72-7.82 (m, 3H), 7.92-8.25 (m, 4H) ppm. ¹³C NMR (DMSO-d₆, 75MHz) δ 31.19, 33.31, 35.99, 53.20, 55.29, 112.96, 118.97, 120.21, 121. 29, 122.40, 127.39, 129.17, 135.17, 135.45, 143.18, 146.64, 150.81, 196.14 ppm. Anal Calc. for C₂₂H₁₉BrN₂OS: C, 60.14; H, 4.36; N, 6.38. Found: C, 60.15; H, 4.33, N, 6.37.

The author apologises for the error and inconvenience caused.