Nanomagnetically modified thioglycolic acid (γ‐Fe
2
O
3
@SiO
2
‐SCH
2
CO
2
H): Efficient and reusable green catalyst for the one‐pot domino synthesis of spiro[benzo[
a
]benzo[6,7]chromeno[2,3‐
c
]phenazine] and benzo[
a
]benzo[6,7]chromeno[2,3‐
c
]phenazines
2020 ◽
Vol 52
(1)
◽
pp. 48-55
◽
2019 ◽
Vol 880
◽
pp. 75-82
◽