Document Type: Original Article
Authors
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
Abstract
Silica supported-boron sulfonic acid (SBSA) was used as a cheap and mild bronsted acidic in the reaction of indole with aldehydes to afford the corresponding bis(indolyl)methanesin in solvent free grinding and room temperature. The catalyst is also effective in the reaction in good yields. This methodology offers several advantages, such as good yields, reusability of catalyst, short reaction times, simple procedure, and mild conditions. The catalyst can be recovered and reused without loss of activity. The work-up of the reaction consists of a simple filtration, followed by concentration of the crude product and purification.
Graphical Abstract
 "Silica supported-boron sulfonic acid: a versatile and reusable catalyst for synthesis of bis(indolyl)methane in solvent free and room temperature conditions")
Keywords
Main Subjects
1. George SM (1995) Chemical Reviews 953:475-476
2. Karimi B, Zareyee D (2008) Organic Letters 1018:3989-3992
3. Osawa T, Namiki M (1983) Tetrahedron letters 2443:4719-4722
4. Sajjadifar S, Rezayati S (2014) Chemical papers 684:531-539
5. J.R. Plimmer, D.W. Gammon, N.N. Ragsdale (2003), Encyclopedia of Argochemicals, vol. 3, John Wiley and Sons, New York.
6. Lo KK-W, Tsang KH-K, Hui W-K, Zhu N (2003) Chemical Communications21:2704-2705
7. Shiri M, Zolfigol MA, Kruger HG, Tanbakouchian Z (2009) Chemical reviews 1104:2250-2293
8. Sobhani S, Safaei E, Hasaninejad A-R, Rezazadeh S (2009) Journal of Organometallic Chemistry 69418:3027-3031
9. Yang Q, Yin ZL, Ouyang BL, Peng YY (2011) Chinese Chemical Letters 225:515-518
10. Sajjadifar S, Mirshokraie SA, Javaherneshan N, Louie O (2012) American Journal of Organic Chemistry 22:1-6
11. Sajjadifar S, Khosravani E, Shiri S (2013) International Journal of ChemTech Research 52:1969-1976
12. Zolfigol MA, Khazaei A, Mokhlesi M, Vahedi H, Sajadifar S, Pirveysian M (2012) Phosphorus, Sulfur, and Silicon and the Related Elements 1873:295-304
13. Zolfigol MA, Vahedi H, Massoudi A, Sajjadifar S, Louie O, Javaherneshan N (2011) Clinical Biochemistry 4413:S219
14. Sajjadifar S, Rezayati S (2013) International Journal of ChemTech Research 51964-1968
15. Sajjadifar S (2013) International Journal of ChemTech Research 5385-389
16. Azimi SC, Rad-Moghadam K (2015) Iranian Chemical Communication 3356-366
17. Moosavi-Zare AR, Pouraskar-Borazjani M, Naz Z (2014) Iranian Chemical Communication 2168-172
18. Sajjadifar S, Mohammadi-Aghdam S (2017) Asian Journal of Green Chemistry 11-15
19. Khorshidi A, Shariati S, Aboutalebi M, Mardazad N (2016) Iranian Chemical Communication 4476-482
20. Hassani H, Zakerinasab B, Nozarie A (2018) Asian Journal of Green Chemistry 359-69
21. Rezayati S, Erfani Z, Rezayati S, Hajinasiri R, Rekavandi M (2014) Iranian Chemical Communication 272-81
22. Mohammadi Zeydi M, Mahmoodi NOA, Ardeshiri Terogeni G (2017) Asian Journal of Green Chemistry 278-88
23. Vijender Reddy A, Ravinder K, Niranjan Reddy V, Venkateshwer Goud T, Ravikanth V, Venkateswarlu Y (2003) Synthetic communications 3321:3687-3694
24. eng X-F, Ji S-J, Wang S-Y (2005) Tetrahedron 6143:10235-10241
25. Yadav JS, Reddy BVS, Murthy CV, Kumar GM, Madan C (2001) Synthesis 200105:0783-0787
26. Deb ML, Bhuyan PJ (2006) Tetrahedron Letters 479:1441-1443
27. Yang YL, Wan NN, Wang WP, Xie ZF, De Wang J (2011) Chinese Chemical Letters 229:1071-1074
28. Bandgar BP, Bettigeri SV, Joshi NS (2004) Monatshefte für Chemie/Chemical Monthly 13510:1265-1273
29. Karthik M, Magesh C, Perumal P, Palanichamy M, Arabindoo B, Murugesan V (2005) Applied Catalysis A: General 2861:137-141
30. Zolfigol MA, Salehi P, Shiri M, Tanbakouchian Z (2007) Catalysis Communications 82:173-178
